/* Sandboxie — logo palette on white */
:root{
  --blue:#0A74F0; --blue-d:#0661C6; --blue-l:#E8F2FE; --blue-line:#CFE2FB;
  --yellow:#F5C400; --orange:#F0A21A; --purple:#8E36C8; --purple-l:#F3EAFB;
  --red:#DE1C24; --red-l:#FDECEC; --green:#1FA36B;
  --navy:#0B1B3A; --ink:#25324B; --muted:#5D6B85;
  --bg:#FFFFFF; --soft:#F7FAFF; --line:#E3EBF7;
  --r:14px; --shadow:0 18px 40px -22px rgba(11,27,58,.35);
  --slab:"Roboto Slab",Georgia,serif; --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"Cascadia Code",Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{margin:0;background:var(--bg);color:var(--ink);font:16.5px/1.75 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-d)}
h1,h2,h3,h4{font-family:var(--slab);color:var(--navy);line-height:1.22;margin:0 0 .55em;font-weight:600}
h1{font-size:clamp(2rem,4.2vw,3.15rem);font-weight:700}
h2{font-size:clamp(1.65rem,3vw,2.3rem)}
h3{font-size:1.2rem}
p{margin:0 0 1em}
.i{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.wrap{width:min(1200px,100%);margin-inline:auto}
.narrow{width:min(920px,100%)}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:200;background:#fff;padding:8px 12px}

/* ---------- header ---------- */
.topline{display:grid;grid-template-columns:repeat(4,1fr);height:4px}
.topline i:nth-child(1){background:var(--blue)}.topline i:nth-child(2){background:var(--yellow)}.topline i:nth-child(3){background:var(--purple)}.topline i:nth-child(4){background:var(--red)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 10px 30px -18px rgba(11,27,58,.35)}
.head-row{display:flex;align-items:center;gap:20px;min-height:72px;padding:0 10px}
.brand img{height:44px;width:auto}
.nav{flex:1;display:flex;justify-content:center}
.nav ul{list-style:none;margin:0;padding:5px;display:flex;gap:2px;background:var(--soft);border:1px solid var(--line);border-radius:999px}
.nav a{display:flex;align-items:center;gap:7px;padding:8px 14px;border-radius:999px;color:var(--ink);font-weight:600;font-size:.92rem;transition:background .25s,color .25s,transform .25s}
.nav a .i{width:17px;height:17px;color:var(--blue);transition:transform .3s}
.nav a:hover{background:#fff;color:var(--blue);box-shadow:0 4px 14px -6px rgba(10,116,240,.4)}
.nav a:hover .i{transform:translateY(-2px) rotate(-6deg)}
.nav a.active{background:var(--blue);color:#fff}.nav a.active .i{color:#fff}
.nav li:last-child a{color:var(--red)}.nav li:last-child a .i{color:var(--red)}
.nav li:last-child a:hover{background:var(--red);color:#fff}.nav li:last-child a:hover .i{color:#fff}
.menu-btn{display:none;margin-left:auto;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;cursor:pointer;color:var(--navy)}
.menu-btn .i{width:24px;height:24px}
.head-row::after{content:"";width:182px;flex-shrink:0}
@media (max-width:1120px){
  .head-row::after{display:none}
  .menu-btn{display:block}
  .nav{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);padding:12px 16px 18px;display:none;box-shadow:0 20px 30px -20px rgba(11,27,58,.3)}
  .nav.open{display:block;animation:drop .25s ease}
  .nav ul{flex-direction:column;border-radius:16px;padding:8px}
  .nav a{border-radius:10px;padding:12px 14px}
}
@keyframes drop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 24px;border-radius:12px;font:700 1rem var(--sans);cursor:pointer;border:2px solid transparent;transition:transform .25s,box-shadow .25s,background .25s,color .25s;position:relative;overflow:hidden}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 14px 28px -14px rgba(10,116,240,.9)}
.btn-primary::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%);transform:translateX(-120%);transition:transform .7s}
.btn-primary:hover{background:var(--blue-d);color:#fff;transform:translateY(-3px);box-shadow:0 18px 30px -14px rgba(10,116,240,.95)}
.btn-primary:hover::after{transform:translateX(120%)}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--blue-line)}
.btn-ghost .i{color:var(--purple)}
.btn-ghost:hover{border-color:var(--purple);color:var(--purple);transform:translateY(-3px)}
.btn-lg{padding:16px 30px;font-size:1.06rem}

/* ---------- sections ---------- */
.sec{padding:70px 10px}
.sec-soft{background:var(--soft)}
.sec-head{text-align:center;max-width:860px;margin:0 auto 42px}
.sec-head h2{position:relative;display:inline-block;padding-bottom:14px}
.sec-head h2::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:64px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--blue) 0 40%,var(--yellow) 40% 60%,var(--red) 60%)}
.sec-head p{color:var(--muted);font-size:1.04rem;margin:0}
.sec-head.left{text-align:left;margin-left:0}
.sec-head.left h2::after{left:0;transform:none}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:980px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr}}

/* card hover like the reference: thin light border -> solid blue, title turns blue */
.card{background:#fff;border:1.5px solid var(--blue-line);border-radius:var(--r);padding:26px;transition:border-color .3s,box-shadow .3s,transform .3s}
.card:hover{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue),var(--shadow);transform:translateY(-6px)}
.card h3{transition:color .3s}
.card:hover h3{color:var(--blue)}
.card p{color:var(--muted);margin:0;font-size:.97rem}

/* ---------- hero ---------- */
.hero{position:relative;padding:40px 10px 90px;overflow:hidden;background:
  radial-gradient(700px 380px at 88% 15%,rgba(10,116,240,.10),transparent 70%),
  radial-gradient(520px 300px at 8% 85%,rgba(142,54,200,.08),transparent 70%),#fff}
.hero-deco span{position:absolute;border-radius:50%;filter:blur(2px);opacity:.55;animation:drift 9s ease-in-out infinite}
.hero-deco .b1{width:14px;height:14px;background:var(--yellow);top:18%;left:46%}
.hero-deco .b2{width:10px;height:10px;background:var(--red);top:70%;left:42%;animation-delay:-3s}
.hero-deco .b3{width:18px;height:18px;background:var(--purple);top:12%;left:6%;animation-delay:-6s;opacity:.3}
@keyframes drift{0%,100%{transform:translate(0,0)}50%{transform:translate(12px,-18px)}}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:36px;align-items:center;position:relative;z-index:2}
.hero h1{margin-bottom:.45em}
.hero-lead{font-size:1.1rem;color:var(--muted);max-width:590px;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-art{position:relative;perspective:1000px}
.hero-art img{width:100%;max-width:620px;margin-left:auto;border-radius:24px;filter:drop-shadow(0 30px 40px rgba(10,116,240,.18))}
.hero-wave{position:absolute;left:0;right:0;bottom:-1px;width:100%;height:70px;fill:var(--bg)}
.hero-wave path{fill:var(--soft)}
@media (max-width:900px){
  .hero{padding:26px 10px 70px}
  .hero-grid{grid-template-columns:1fr;gap:24px}
  .hero-art img{max-width:480px;margin:0 auto}
  .hero-lead{font-size:1rem}
}
@media (max-width:520px){.hero-cta .btn{width:100%}}

.float{animation:float 6s ease-in-out infinite}
.float-slow{animation:float 8s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.tilt-img,.tilt{transition:transform .35s ease;transform-style:preserve-3d;will-change:transform}

/* ---------- what is ---------- */
.split{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.split-txt p{text-align:justify;color:var(--ink)}
.split-art img{border-radius:22px;box-shadow:0 30px 50px -30px rgba(11,27,58,.35)}
.ticks{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:12px}
.ticks li{display:flex;gap:12px;align-items:flex-start;font-weight:500;color:var(--navy)}
.ticks .i{color:var(--blue);margin-top:4px}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:30px}}

/* ---------- features ---------- */
.f-card{text-align:center}
.f-ic{width:64px;height:64px;margin:0 auto 18px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue-l),#fff);border:1.5px solid var(--blue-line);transition:transform .4s,background .3s}
.f-ic .i{width:30px;height:30px;color:var(--blue)}
.f-card:nth-child(3n+2) .f-ic .i{color:var(--purple)}
.f-card:nth-child(3n) .f-ic .i{color:var(--red)}
.f-card:hover .f-ic{transform:rotateY(180deg);background:var(--blue-l)}

/* ---------- steps ---------- */
.steps{display:grid;gap:16px;max-width:1000px;margin:0 auto}
.step{display:grid;grid-template-columns:44px 1fr;gap:18px;align-items:start;background:#fff;border:1.5px solid var(--blue-line);border-radius:var(--r);padding:22px 26px;transition:border-color .3s,box-shadow .3s,transform .3s}
.step:hover{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue),var(--shadow);transform:translateX(6px)}
.step-n{width:36px;height:36px;border-radius:50%;background:var(--purple);color:#fff;display:grid;place-items:center;font:700 1rem var(--slab);margin-top:2px}
.step:nth-child(2) .step-n{background:var(--blue)}.step:nth-child(3) .step-n{background:var(--orange)}.step:nth-child(4) .step-n{background:var(--red)}
.step h3{margin-bottom:.3em;transition:color .3s}
.step:hover h3{color:var(--blue)}
.step p{margin:0;color:var(--muted)}

/* ---------- tabs + console ---------- */
.tabs{max-width:1000px;margin:0 auto}
.tab-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:22px}
.tab-btns button{display:inline-flex;align-items:center;gap:8px;border:0;background:var(--blue-l);color:var(--navy);font:600 .95rem var(--slab);padding:11px 22px;border-radius:10px;cursor:pointer;transition:background .25s,color .25s,transform .25s}
.tab-btns button .i{width:17px;height:17px}
.tab-btns button:hover{background:#d6e7fd;transform:translateY(-2px)}
.tab-btns button[aria-selected="true"]{background:var(--blue);color:#fff;box-shadow:0 10px 20px -12px rgba(10,116,240,.9)}
.console{background:#0E1626;border:4px solid #263248;border-radius:14px;box-shadow:0 26px 50px -30px rgba(11,27,58,.7);animation:fadeUp .35s ease}
.console pre{margin:0;padding:24px 26px;color:#E6EDF8;font:.92rem/1.75 var(--mono);overflow-x:auto;white-space:pre}
.console .cm{color:var(--yellow)}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- use cases band ---------- */
.sec-band{background:linear-gradient(135deg,var(--blue) 0%,var(--blue-d) 55%,#4a3fc9 100%);color:#fff;position:relative;overflow:hidden}
.sec-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.14) 1.2px,transparent 1.2px);background-size:26px 26px}
.sec-band .wrap{position:relative}
.sec-band h2,.sec-band h3{color:#fff}
.sec-band .sec-head p{color:#DCE9FF}
.sec-band .sec-head h2::after{background:linear-gradient(90deg,#fff 0 40%,var(--yellow) 40% 60%,var(--red) 60%)}
.split-band{grid-template-columns:1fr 1fr}
.u-list{display:grid;gap:14px}
.u-card{border:1.5px solid rgba(255,255,255,.35);background:rgba(255,255,255,.08);border-radius:var(--r);padding:16px 20px;transition:background .3s,border-color .3s,transform .3s}
.u-card h3{font-size:1.12rem;margin-bottom:.25em}
.u-card p{margin:0;color:#E6EFFF;font-size:.95rem}
.u-card:hover{background:rgba(255,255,255,.18);border-color:var(--yellow);transform:translateX(8px)}
.sec-band .split-art img{border-radius:22px;box-shadow:0 30px 50px -24px rgba(0,0,0,.45)}
@media (max-width:900px){.split-band{grid-template-columns:1fr}}

/* ---------- download ---------- */
.dl-box{display:grid;grid-template-columns:.9fr 1.1fr;gap:46px;align-items:center;border:1.5px solid var(--blue-line);border-radius:26px;padding:34px;background:linear-gradient(160deg,#fff 0%,var(--soft) 100%)}
.dl-art img{border-radius:20px}
.dl-txt h2{position:relative;padding-bottom:14px}
.dl-txt h2::after{content:"";position:absolute;left:0;bottom:0;width:64px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--blue) 0 40%,var(--yellow) 40% 60%,var(--red) 60%)}
.dl-txt>p{color:var(--muted)}
.dl-facts{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}
.dl-facts div{background:#fff;border:1.5px solid var(--blue-line);border-radius:12px;padding:12px 14px;transition:border-color .3s}
.dl-facts div:hover{border-color:var(--purple)}
.dl-facts span{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:600}
.dl-facts b{color:var(--navy);font-size:.98rem}
.dl-note{display:flex;gap:10px;background:var(--purple-l);border-radius:12px;padding:12px 14px;color:#4b2370;font-size:.93rem}
.dl-note .i{color:var(--purple);margin-top:3px}
@media (max-width:900px){.dl-box{grid-template-columns:1fr;padding:22px}.dl-facts{grid-template-columns:1fr}}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;border:1.5px solid var(--blue-line);border-radius:14px;background:#fff}
table{width:100%;border-collapse:collapse;min-width:560px;font-size:.96rem}
th,td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
th{background:var(--blue-l);color:var(--blue-d);font:600 .95rem var(--slab)}
tr:last-child td{border-bottom:0}
tbody tr{transition:background .2s}
tbody tr:hover{background:#FAFCFF}
table.vs th:not(:first-child),table.vs td:not(:first-child){text-align:center}
table.vs th.hl{background:var(--blue);color:#fff}
table.vs td:nth-child(2){background:rgba(10,116,240,.04)}
.mk{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%}
.mk .i{width:16px;height:16px;stroke-width:3}
.mk.y{background:#E5F1FE;color:var(--blue)}.mk.n{background:var(--red-l);color:var(--red)}.mk.p{background:#FFF5D6;color:#A57A00;font-weight:800}
.table-note{color:var(--muted);text-align:center;max-width:860px;margin:20px auto 0;font-size:.95rem}

/* ---------- troubleshooting ---------- */
.t-head{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.t-head h3{margin:0;font-size:1.08rem}
.t-ic{width:46px;height:46px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;background:var(--red-l);color:var(--red);transition:transform .4s}
.t-card:nth-child(even) .t-ic{background:var(--purple-l);color:var(--purple)}
.t-card:hover .t-ic{transform:rotate(-10deg) scale(1.08)}

/* ---------- requirements ---------- */
.r-ic{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;background:var(--blue-l);color:var(--blue);margin-bottom:14px}
.r-ic .i{width:28px;height:28px}
.checks{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.checks li{display:flex;gap:10px;align-items:flex-start;color:var(--ink);font-size:.96rem}
.checks .i{width:18px;height:18px;color:#fff;background:var(--blue);border-radius:50%;padding:3px;stroke-width:3;margin-top:4px}
.r-wide{display:flex;gap:20px;align-items:flex-start;margin-top:24px}
.r-wide .r-ic{margin:0;flex-shrink:0;background:var(--purple-l);color:var(--purple)}
.checks.inline{display:flex;flex-wrap:wrap;gap:10px 26px}
@media (max-width:640px){.r-wide{flex-direction:column}}

/* ---------- safety ---------- */
.safety-split{grid-template-columns:.85fr 1.15fr}
.s-ic{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:var(--blue-l);color:var(--blue);margin-bottom:14px;transition:transform .4s}
.s-card:nth-child(2) .s-ic{background:var(--purple-l);color:var(--purple)}
.s-card:nth-child(3) .s-ic{background:#FFF5D6;color:#B38800}
.s-card:nth-child(4) .s-ic{background:var(--red-l);color:var(--red)}
.s-card:hover .s-ic{transform:translateY(-4px) scale(1.06)}
.s-card h3{font-size:1.08rem}
@media (max-width:900px){.safety-split{grid-template-columns:1fr}}

/* ---------- pros/cons ---------- */
.pc-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.pc h3{display:flex;align-items:center;gap:10px}
.pc ul{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.pc li{display:flex;gap:12px;align-items:flex-start}
.pc li .i{width:22px;height:22px;border-radius:50%;padding:4px;stroke-width:3;margin-top:2px}
.pc-pro{border-top:5px solid var(--blue)}
.pc-pro h3 .i{color:var(--blue)}
.pc-pro li .i{background:#E5F1FE;color:var(--blue)}
.pc-con{border-top:5px solid var(--red)}
.pc-con h3 .i{color:var(--red)}
.pc-con li .i{background:var(--red-l);color:var(--red)}
.pc-con:hover{border-color:var(--red);box-shadow:0 0 0 1px var(--red),var(--shadow)}
.pc-con:hover h3{color:var(--red)}
@media (max-width:760px){.pc-grid{grid-template-columns:1fr}}

/* ---------- accordion (one open at a time) ---------- */
.acc{border:1.5px solid var(--blue-line);border-radius:12px;margin-bottom:12px;background:#fff;transition:border-color .25s,background .25s}
.acc summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;padding:15px 18px;font-weight:600;color:var(--navy);border-radius:11px;transition:background .25s,color .25s}
.acc summary::-webkit-details-marker{display:none}
.acc summary .chev{width:20px;height:20px;color:var(--blue);fill:none;stroke:currentColor;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;transition:transform .3s}
.acc:hover{border-color:var(--blue)}
.acc[open]{border-color:var(--blue)}
.acc[open] summary{background:var(--blue-l);color:var(--blue-d)}
.acc[open] summary .chev{transform:rotate(90deg)}
.acc-body{padding:14px 18px 4px;animation:fadeUp .3s ease}
.acc-body p{color:var(--ink)}
.faq-panel{animation:fadeUp .35s ease}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- page heros ---------- */
.page-hero{padding:70px 10px 56px;text-align:center;background:
  radial-gradient(600px 260px at 80% 0%,rgba(10,116,240,.10),transparent 70%),
  radial-gradient(480px 240px at 10% 100%,rgba(245,196,0,.10),transparent 70%),var(--soft);border-bottom:1px solid var(--line)}
.page-hero h1{max-width:900px;margin:0 auto .4em}
.page-hero p{color:var(--muted);max-width:760px;margin:0 auto;font-size:1.05rem}
.page-hero.nf p{margin-bottom:22px}

/* ---------- guide cards ---------- */
.g-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.g-card{display:flex;flex-direction:column;background:#fff;border:1.5px solid var(--blue-line);border-radius:18px;overflow:hidden;color:inherit;transition:border-color .3s,box-shadow .3s}
.g-card:hover{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue),var(--shadow);color:inherit}
.g-img{overflow:hidden;aspect-ratio:16/9;background:var(--soft)}
.g-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.g-card:hover .g-img img{transform:scale(1.07)}
.g-txt{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.g-cat{font:700 .74rem var(--sans);text-transform:uppercase;letter-spacing:.1em;color:var(--purple);margin-bottom:6px}
.g-txt h2{font-size:1.16rem;margin-bottom:.45em;transition:color .3s}
.g-card:hover h2{color:var(--blue)}
.g-txt p{color:var(--muted);font-size:.94rem;flex:1}
.g-more{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--blue);font-size:.92rem}
.g-more .i{width:16px;height:16px;transition:transform .3s}
.g-card:hover .g-more .i{transform:translateX(5px)}
@media (max-width:980px){.g-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.g-grid{grid-template-columns:1fr}}

/* ---------- blog post ---------- */
.post-hero{padding:56px 10px 50px;background:
  radial-gradient(600px 300px at 90% 10%,rgba(142,54,200,.08),transparent 70%),var(--soft);border-bottom:1px solid var(--line)}
.post-hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}
.crumbs{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:.88rem;color:var(--muted);margin-bottom:16px}
.crumbs .i{width:14px;height:14px}
.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--blue)}
.post-hero h1{font-size:clamp(1.8rem,3.4vw,2.6rem)}
.post-sub{color:var(--muted);font-size:1.05rem;margin:0}
.post-fig img{border-radius:20px;border:1.5px solid var(--blue-line);box-shadow:0 30px 50px -30px rgba(11,27,58,.45)}
@media (max-width:900px){.post-hero-grid{grid-template-columns:1fr}}
.post-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:46px;align-items:start}
.article{font-size:1.04rem}
.article>p:first-child{font-size:1.12rem;color:var(--navy)}
.article p{text-align:justify}
.article h2{font-size:1.65rem;margin-top:1.7em;padding-left:16px;border-left:4px solid var(--blue)}
.article h2:first-child{margin-top:0}
.article h3{margin-top:1.4em;font-size:1.22rem}
.article ul{padding-left:0;list-style:none}
.article ul li{position:relative;padding-left:26px;margin-bottom:.55em}
.article ul li::before{content:"";position:absolute;left:4px;top:.68em;width:9px;height:9px;border-radius:3px;background:var(--yellow);box-shadow:0 0 0 3px #FFF5D0}
.article code{font-family:var(--mono);font-size:.9em;background:var(--blue-l);color:var(--blue-d);border-radius:6px;padding:.1em .4em}
.article pre{background:#0E1626;color:#E6EDF8;border:4px solid #263248;border-radius:14px;padding:20px 22px;overflow-x:auto;font:.9rem/1.7 var(--mono)}
.article pre code{background:none;color:inherit;padding:0}
.article .table-wrap{margin:1.4em 0}
.callout{border-left:5px solid var(--purple);background:var(--purple-l);border-radius:12px;padding:16px 20px;margin:1.6em 0}
.callout p{margin:0;color:#3d1f5e;text-align:left}
.faq-list{margin-top:10px}
.sidebar{position:sticky;top:96px;display:grid;gap:20px}
.side-card{background:#fff;border:1.5px solid var(--blue-line);border-radius:16px;padding:20px 22px;transition:border-color .3s}
.side-card:hover{border-color:var(--blue)}
.side-card h3{display:flex;align-items:center;gap:9px;font-size:1.05rem;margin-bottom:14px}
.side-card h3 .i{color:var(--blue)}
.toc,.more{list-style:none;padding:0;margin:0;display:grid;gap:4px}
.toc a{display:block;padding:6px 10px;border-radius:8px;color:var(--ink);font-size:.92rem;line-height:1.45;border-left:3px solid transparent;transition:background .2s,border-color .2s,color .2s}
.toc a:hover,.toc a.on{background:var(--blue-l);border-left-color:var(--blue);color:var(--blue-d)}
.side-facts dl{margin:0;display:grid;gap:4px}
.side-facts dt{font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700;margin-top:6px}
.side-facts dd{margin:0;color:var(--navy);font-weight:600;font-size:.95rem}
.more a{display:grid;grid-template-columns:84px 1fr;gap:12px;align-items:center;padding:6px;border-radius:10px;color:var(--ink);font-size:.9rem;line-height:1.4;font-weight:600;transition:background .2s,color .2s}
.more a:hover{background:var(--blue-l);color:var(--blue-d)}
.more img{border-radius:8px;width:84px;height:47px;object-fit:cover}
@media (max-width:1000px){.post-grid{grid-template-columns:1fr}.sidebar{position:static}}

/* ---------- legal ---------- */
.legal{max-width:880px}
.legal h2{font-size:1.4rem;margin-top:1.6em}
.legal h2:first-child{margin-top:0}
.legal p,.legal li{color:var(--ink)}
.legal ul{padding-left:20px}
.email{font-weight:700;color:var(--blue-d);user-select:all}
.contact-card{display:flex;gap:22px;align-items:center;border:1.5px solid var(--blue-line);border-radius:20px;padding:28px;background:linear-gradient(140deg,#fff,var(--soft));margin-bottom:30px;transition:border-color .3s,box-shadow .3s}
.contact-card:hover{border-color:var(--blue);box-shadow:var(--shadow)}
.contact-card h2{margin:0 0 .2em}
.contact-card p{margin:0}
.cc-ic{width:70px;height:70px;border-radius:18px;display:grid;place-items:center;background:var(--blue);color:#fff;flex-shrink:0}
.cc-ic .i{width:34px;height:34px}
.email.big{font-size:1.3rem;margin:4px 0 6px}
@media (max-width:560px){.contact-card{flex-direction:column;text-align:center}}

/* ---------- footer ---------- */
.site-footer{background:var(--soft);border-top:1px solid var(--line);padding:60px 10px 0;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--blue) 0 25%,var(--yellow) 25% 50%,var(--purple) 50% 75%,var(--red) 75%)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1fr;gap:36px}
.foot-brand .brand img{height:46px;margin-bottom:14px}
.foot-brand p{color:var(--muted);font-size:.95rem;max-width:360px}
.site-footer h4{font-size:1.02rem;margin-bottom:16px;position:relative;padding-bottom:10px}
.site-footer h4::after{content:"";position:absolute;left:0;bottom:0;width:34px;height:3px;border-radius:3px;background:var(--blue)}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.site-footer ul a{color:var(--ink);font-size:.94rem;display:inline-block;transition:color .25s,transform .25s}
.site-footer ul a:hover{color:var(--blue);transform:translateX(5px)}
.foot-bottom{margin-top:44px;border-top:1px solid var(--line);padding:22px 0 26px;text-align:center}
.foot-bottom p{margin:4px 0;color:var(--muted);font-size:.92rem}
.kw{color:var(--red);font-weight:700;text-decoration:none}
a.kw:hover{color:var(--blue);text-decoration:none}
@media (max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.foot-grid{grid-template-columns:1fr}}

/* ---------- back to top (square, like the reference) ---------- */
.to-top{position:fixed;right:20px;bottom:20px;width:44px;height:44px;border:0;border-radius:6px;background:var(--blue);color:#fff;display:grid;place-items:center;cursor:pointer;opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .3s,transform .3s,background .25s;z-index:90;box-shadow:0 10px 22px -10px rgba(10,116,240,.9)}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{background:var(--red)}
.to-top .i{width:22px;height:22px;stroke-width:2.6}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}