/* =====================================================================
   Hinet Knowledge Base — shared stylesheet (Hub + Single Post)
   Brand: hinet-brand-design V2  ·  Motion: "Web Motion & 3D Layer"
   - Navy #0B2A6B = text / CTA · Connection #145ADC = H1, links, eyebrow
   - Insight #0D3D9E = hover · Cloud #E8F0FD = surface · Growth #FFC857 = accent only
   - Hub = motion level HIGH (tilt / parallax) · Post = LOW (reveal / progress)
   ===================================================================== */
:root{
  --navy:#0B2A6B; --connection:#145ADC; --insight:#0D3D9E; --cloud:#E8F0FD; --growth:#FFC857;
  --canvas:#FFFFFF; --ink:#0B2A6B; --body:#1F2A44; --muted:#5B6B8C; --hairline:#D6E2F7;
  --surface:#F5F8FE; --danger:#D93025; --ok:#1A7F4B;
  --font:'IBM Plex Sans Thai','IBM Plex Sans',Tahoma,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,Consolas,monospace;
  --shadow:0 2px 8px rgba(11,42,107,.08);
  --shadow-lift:0 14px 34px rgba(11,42,107,.14);
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:24px; --r-full:9999px;
  --maxw:1200px; --read:760px; --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);font-size:1rem;line-height:1.75;color:var(--body);background:var(--canvas);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%;display:block}
a{color:var(--connection);text-decoration:none}
a:hover{text-decoration:underline;color:var(--insight)}
:focus-visible{outline:3px solid var(--connection);outline-offset:2px;border-radius:4px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--navy);color:#fff;padding:8px 16px;border-radius:var(--r-sm);z-index:999}
.skip:focus{left:8px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;letter-spacing:-.01em;font-weight:600}
code,kbd{font-family:var(--mono);font-size:.9em;background:var(--cloud);color:var(--navy);padding:1px 6px;border-radius:6px;word-break:break-word}
pre{font-family:var(--mono);font-size:.88rem;line-height:1.6;background:var(--navy);color:#E8F0FD;padding:18px 20px;border-radius:var(--r-md);overflow-x:auto;margin:16px 0}
pre code{background:none;color:inherit;padding:0}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 1rem/1.25 var(--font);border-radius:var(--r-sm);padding:14px 28px;min-height:48px;border:1px solid transparent;cursor:pointer;transition:background .2s,transform .2s,box-shadow .2s;text-decoration:none!important;white-space:nowrap}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--insight);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-secondary{background:#fff;color:var(--navy);border-color:var(--navy)}
.btn-secondary:hover{background:var(--cloud);color:var(--navy)}
.btn-line{background:#06C755;color:#fff}
.btn-line:hover{background:#05a648;color:#fff}
.btn-sm{padding:9px 18px;min-height:40px;font-size:.92rem}
.btn i{font-size:1.2em}

/* ---------- Wordmark (V2: "Hinet" + Growth Intelligence Point) ---------- */
.wordmark{display:inline-flex;align-items:baseline;font:700 1.6rem/1 'IBM Plex Sans',var(--font);color:var(--navy);letter-spacing:-.02em;text-decoration:none!important}
.wordmark .wm-i{position:relative;display:inline-block}
.wordmark .wm-i::after{content:"";position:absolute;left:50%;top:.02em;width:.25em;height:.25em;border-radius:50%;background:var(--growth);transform:translateX(-50%);box-shadow:0 0 0 .05em #fff}
.wordmark small{font:500 .78rem/1 var(--font);color:var(--muted);margin-left:10px;letter-spacing:0}

/* ---------- Top nav ---------- */
.top-nav{position:sticky;top:0;z-index:100;height:var(--nav-h);display:flex;align-items:center;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--hairline)}
.top-nav .container{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.nav-links{display:flex;gap:2px;list-style:none}
.nav-links a{display:block;color:var(--body);font-size:.94rem;font-weight:500;padding:8px 14px;border-radius:var(--r-full)}
.nav-links a:hover,.nav-links a[aria-current]{background:var(--cloud);color:var(--navy);text-decoration:none}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-line img{width:38px;height:38px;border-radius:10px}
.nav-lang{font-weight:600;font-size:.88rem;color:var(--navy);border:1px solid var(--hairline);border-radius:var(--r-full);padding:6px 12px}
.nav-lang:hover{background:var(--cloud);text-decoration:none}
.nav-toggle{display:none;background:none;border:0;font-size:1.8rem;color:var(--navy);cursor:pointer;line-height:1}
@media (max-width:991px){
  .nav-links{display:none;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--hairline);padding:10px 16px 16px;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .nav-cta .btn span{display:none}
  .nav-cta .btn{padding:9px 12px}
}
@media (max-width:420px){.wordmark small{display:none}.nav-line{display:none}}

/* ---------- Reading progress (post) ---------- */
.progress{position:fixed;top:0;left:0;height:3px;width:100%;transform-origin:0 50%;transform:scaleX(0);background:linear-gradient(90deg,var(--connection),var(--growth));z-index:200}

/* ---------- Breadcrumb ---------- */
.crumbs{font-size:.86rem;color:var(--muted);padding:18px 0 0}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--hairline)}
.crumbs a{color:var(--muted)}
.crumbs [aria-current]{color:var(--navy);font-weight:500}

/* ---------- Eyebrow & chips ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--connection)}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;font-weight:600;color:var(--navy);background:var(--cloud);border-radius:var(--r-full);padding:4px 12px}
.chip-sev{background:#FDECEA;color:#A1271B}

/* =====================================================================
   SINGLE POST
   ===================================================================== */
.post-hero{position:relative;padding:28px 0 36px;background:linear-gradient(180deg,var(--surface) 0%,#fff 100%);overflow:hidden}
.post-hero::before{content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(20,90,220,.10),transparent 65%);pointer-events:none}
.post-hero .chips{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 14px}
.post-hero h1{color:var(--connection);font-size:clamp(1.75rem,4vw,2.45rem);font-weight:700;line-height:1.3;max-width:900px}
.post-hero .lead{font-size:1.1rem;line-height:1.7;color:var(--body);max-width:780px;margin-top:14px}
.post-hero .rule{width:56px;height:4px;border-radius:var(--r-full);background:var(--growth);margin-top:20px}

.byline{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;margin-top:22px;font-size:.9rem;color:var(--muted)}
.byline .author{display:flex;align-items:center;gap:12px}
.avatar{width:46px;height:46px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:600;font-size:.95rem;flex:0 0 auto;position:relative}
.avatar::after{content:"";position:absolute;right:1px;top:1px;width:11px;height:11px;border-radius:50%;background:var(--growth);border:2px solid #fff}
.byline .author b{display:block;color:var(--navy);font-weight:600;font-size:.95rem}
.byline .author span{font-size:.84rem}
.byline .meta{display:flex;flex-wrap:wrap;gap:6px 18px}
.byline .meta i{color:var(--connection);margin-right:4px;vertical-align:-2px}

.post-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;padding-top:36px;padding-bottom:72px}
.post-body{max-width:var(--read);min-width:0}
@media (max-width:1023px){.post-layout{grid-template-columns:1fr;gap:0}.post-aside{display:none}}

/* TL;DR box */
.tldr{position:relative;background:var(--cloud);border-radius:var(--r-lg);padding:24px 26px 22px;margin-bottom:34px;border-left:4px solid var(--growth)}
.tldr h2{font-size:1rem;font-weight:700;color:var(--navy);display:flex;align-items:center;gap:8px;margin-bottom:8px;letter-spacing:.02em}
.tldr p{color:var(--navy);font-size:1.02rem;line-height:1.75}
.tldr ul{margin:10px 0 0 20px;color:var(--navy)}

/* TOC */
.toc{border:1px solid var(--hairline);border-radius:var(--r-lg);padding:6px 20px;margin-bottom:36px;background:#fff}
.toc summary{cursor:pointer;font-weight:600;color:var(--navy);padding:12px 0;list-style:none;display:flex;justify-content:space-between;align-items:center}
.toc summary::-webkit-details-marker{display:none}
.toc summary i{transition:transform .2s}
.toc[open] summary i{transform:rotate(180deg)}
.toc ol{margin:0 0 14px 20px;font-size:.95rem}
.toc li{margin:5px 0}
.toc a{color:var(--body)}
.post-aside .toc-side{position:sticky;top:calc(var(--nav-h) + 24px)}
.toc-side h2{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.toc-side ol{list-style:none;border-left:2px solid var(--hairline)}
.toc-side ol a{display:block;padding:6px 0 6px 14px;margin-left:-2px;border-left:2px solid transparent;color:var(--muted);font-size:.9rem;line-height:1.5}
.toc-side ol a:hover{color:var(--navy);text-decoration:none}
.toc-side ol a.active{color:var(--navy);font-weight:600;border-left-color:var(--connection)}
.aside-cta{margin-top:28px;background:var(--navy);color:#fff;border-radius:var(--r-lg);padding:22px}
.aside-cta b{display:block;font-size:1.02rem;margin-bottom:6px}
.aside-cta p{font-size:.88rem;color:#C9D8F7;line-height:1.6;margin-bottom:14px}
.aside-cta .btn{width:100%;background:#fff;color:var(--navy)}
.aside-cta .btn:hover{background:var(--cloud)}

/* Article prose */
.prose>*+*{margin-top:16px}
.prose h2{font-size:clamp(1.35rem,2.6vw,1.65rem);margin-top:52px;padding-top:8px;scroll-margin-top:calc(var(--nav-h) + 16px)}
.prose h2::after{content:"";display:block;width:40px;height:4px;border-radius:var(--r-full);background:var(--growth);margin-top:12px}
.prose h3{font-size:1.18rem;margin-top:30px;scroll-margin-top:calc(var(--nav-h) + 16px)}
.prose p,.prose li{font-size:1.04rem;line-height:1.8}
.prose ul,.prose ol{padding-left:22px}
.prose li+li{margin-top:6px}
.prose strong{color:var(--navy);font-weight:600}
.prose .answer{font-size:1.08rem;color:var(--navy);font-weight:500}
.prose figure{margin:28px 0}
.diagram .svg-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.diagram svg{min-width:620px}
.prose figcaption{font-size:.86rem;color:var(--muted);margin-top:10px;text-align:center}

/* tables */
.table-wrap{overflow-x:auto;border:1px solid var(--hairline);border-radius:var(--r-md);margin:20px 0;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:.95rem;min-width:560px}
th{background:var(--navy);color:#fff;font-weight:600;text-align:left;padding:12px 14px;font-size:.9rem}
td{padding:12px 14px;border-top:1px solid var(--hairline);vertical-align:top;line-height:1.6}
tbody tr:nth-child(even){background:var(--surface)}
tr.hl{background:#FFF3D1!important}
td code{white-space:nowrap}

/* steps (HowTo) */
.steps{list-style:none;padding:0!important;counter-reset:st;margin-top:22px}
.steps>li{position:relative;padding:0 0 26px 62px;counter-increment:st}
.steps>li::before{content:counter(st);position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:700;font-size:1.05rem}
.steps>li::after{content:"";position:absolute;left:21px;top:50px;bottom:6px;width:2px;background:var(--hairline)}
.steps>li:last-child::after{display:none}
.steps h3{margin-top:6px!important;font-size:1.12rem}
.steps p{margin-top:6px}

/* callouts */
.callout{border-radius:var(--r-md);padding:18px 20px;display:flex;gap:14px;align-items:flex-start;font-size:.98rem;line-height:1.7}
.callout>i{font-size:1.5rem;flex:0 0 auto;margin-top:1px}
.callout-tip{background:var(--cloud);color:var(--navy)}
.callout-tip>i{color:var(--connection)}
.callout-warn{background:#FFF6E0;color:#5C4200;border:1px solid #F5DFA6}
.callout-warn>i{color:#B7791F}
.callout b{font-weight:600}

/* first-hand experience (E-E-A-T) */
.experience{position:relative;background:var(--navy);color:#E8F0FD;border-radius:var(--r-lg);padding:28px 28px 26px;margin:32px 0}
.experience .eyebrow{color:var(--growth)}
.experience h3{color:#fff;margin:8px 0 10px!important;font-size:1.2rem}
.experience p,.experience li{color:#DCE6FA;font-size:1rem!important}
.experience strong{color:#fff}
.experience p+p{margin-top:12px}
.experience .stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0 6px}
.experience .stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-md);padding:14px}
.experience .stat b{display:block;font-size:1.6rem;font-weight:700;color:var(--growth);line-height:1.2}
.experience .stat span{font-size:.82rem;color:#C9D8F7;line-height:1.4;display:block;margin-top:4px}
@media (max-width:560px){.experience .stats{grid-template-columns:1fr}}

/* FAQ */
.faq{margin-top:18px;border-top:1px solid var(--hairline)}
.faq details{border-bottom:1px solid var(--hairline)}
.faq summary{cursor:pointer;list-style:none;padding:18px 40px 18px 0;font-weight:600;color:var(--navy);position:relative;font-size:1.03rem;line-height:1.55}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:14px;font-size:1.5rem;font-weight:400;color:var(--connection);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details>div{padding:0 0 18px;color:var(--body)}

/* references & related */
.refs{font-size:.92rem}
.refs li{margin:6px 0}
.related{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:18px}
.related a{display:block;border:1px solid var(--hairline);border-radius:var(--r-md);padding:16px 18px;color:var(--navy);font-weight:600;line-height:1.5;transition:border-color .2s,transform .2s,box-shadow .2s}
.related a span{display:block;font-size:.78rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--connection);margin-bottom:6px}
.related a:hover{border-color:var(--connection);transform:translateY(-2px);box-shadow:var(--shadow);text-decoration:none}

.reviewed{display:flex;line-height:1.6;gap:12px;align-items:center;font-size:.9rem;color:var(--muted);border-top:1px solid var(--hairline);margin-top:44px;padding-top:20px}
.reviewed i{font-size:1.4rem;color:var(--ok)}

/* ---------- Help / support form ---------- */
.help{background:linear-gradient(180deg,#0B2A6B 0%,#145ADC 70%,#3E7AE6 100%);color:#fff;padding:72px 0;position:relative;overflow:hidden}
.help::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);background-size:22px 22px;mask-image:linear-gradient(180deg,#000,transparent 80%);-webkit-mask-image:linear-gradient(180deg,#000,transparent 80%);pointer-events:none}
.help .container{position:relative;display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:start}
.help h2{color:#fff;font-size:clamp(1.5rem,3vw,2rem);font-weight:700}
.help .eyebrow{color:var(--growth)}
.help p{color:#DCE6FA;margin-top:12px;font-size:1.04rem}
.help-points{list-style:none;margin-top:20px}
.help-points li{display:flex;gap:10px;margin:10px 0;color:#fff}
.help-points i{color:var(--growth);font-size:1.3rem;margin-top:3px}
.help-alt{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.help-alt .btn-secondary{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.help-alt .btn-secondary:hover{background:rgba(255,255,255,.12);color:#fff}
.form-card{background:#fff;color:var(--body);border-radius:var(--r-xl);padding:28px;box-shadow:0 24px 60px rgba(4,16,48,.35)}
.form-card h3{font-size:1.15rem;margin-bottom:4px}
.form-card p.sub{font-size:.88rem;color:var(--muted);margin-bottom:18px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
.field label{display:block;font-size:.86rem;font-weight:600;color:var(--navy);margin-bottom:6px}
.field label .req{color:var(--danger)}
.field input,.field textarea{width:100%;font:400 1rem/1.5 var(--font);color:var(--body);border:1px solid var(--hairline);border-radius:var(--r-md);padding:12px 14px;background:#fff;transition:border-color .2s,box-shadow .2s}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--connection);box-shadow:0 0 0 3px rgba(20,90,220,.15)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-top:16px}
.form-foot .btn{flex:1 1 200px}
.form-card p.form-note{font-size:.8rem;color:var(--muted);margin-top:12px;line-height:1.55}
.form-msg{display:none;border-radius:var(--r-md);padding:12px 14px;font-size:.92rem;margin-bottom:14px}
.form-msg.ok{display:block;background:#E6F4EC;color:#14532D}
.form-msg.err{display:block;background:#FDECEA;color:#8A1C12}
@media (max-width:900px){.help .container{grid-template-columns:1fr;gap:32px}}
@media (max-width:560px){.form-grid{grid-template-columns:1fr}.form-card{padding:22px}.help{padding:56px 0}}

/* ---------- Footer ---------- */
.site-footer{background:#071D4D;color:#B9C8E8;padding:56px 0 0;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.site-footer .wordmark{color:#fff}
.site-footer .wordmark .wm-i::after{box-shadow:0 0 0 .05em #071D4D}
.site-footer h3{color:#fff;font-size:.95rem;margin-bottom:12px}
.site-footer ul{list-style:none}
.site-footer li{margin:7px 0}
.site-footer a{color:#B9C8E8}
.site-footer a:hover{color:#fff}
.site-footer address{font-style:normal;margin-top:14px;line-height:1.7}
.footer-social{display:flex;gap:10px;margin-top:14px;font-size:1.5rem}
.footer-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);color:#fff;border-radius:var(--r-md);padding:8px 14px;font-size:.8rem;margin-top:16px}
.footer-badge i{color:var(--growth)}
.footer-legal{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding:18px 0;font-size:.82rem}
@media (max-width:860px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr}}

/* ---------- Mobile sticky help bar ---------- */
.sticky-help{position:fixed;left:0;right:0;bottom:0;z-index:90;background:#fff;border-top:1px solid var(--hairline);box-shadow:0 -6px 20px rgba(11,42,107,.08);padding:10px 16px calc(10px + env(safe-area-inset-bottom));display:none;gap:10px;transform:translateY(110%);transition:transform .3s}
.sticky-help.show{transform:none}
.sticky-help .btn{flex:1;min-height:44px;padding:10px 12px;font-size:.92rem}
@media (max-width:760px){.sticky-help{display:flex}body.has-sticky{padding-bottom:70px}}

/* ---------- Motion: reveal (all pages, LOW) ---------- */
.rv{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
.no-js .rv{opacity:1;transform:none}

/* =====================================================================
   HUB (Knowledge index) — motion level HIGH: CSS 3D tilt + parallax
   ===================================================================== */
.hub-hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#0B2A6B 0%,#145ADC 62%,#E8F0FD 100%);color:#fff;padding:72px 0 120px;perspective:1200px}
.hub-hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hub-hero .eyebrow{color:var(--growth)}
.hub-hero h1{color:#fff;font-size:clamp(2rem,5vw,3.2rem);font-weight:700;line-height:1.2;margin-top:12px}
.hub-hero h1 em{font-style:normal;color:var(--growth)}
.hub-hero .lead{font-size:1.12rem;color:#DCE6FA;margin-top:16px;max-width:560px}
.hub-search{position:relative;margin-top:28px;max-width:560px}
.hub-search input{width:100%;font:400 1.05rem/1.4 var(--font);border:0;border-radius:var(--r-full);padding:18px 120px 18px 54px;color:var(--body);box-shadow:0 18px 40px rgba(4,16,48,.3)}
.hub-search input:focus{outline:3px solid var(--growth);outline-offset:2px}
.hub-search>i{position:absolute;left:20px;top:50%;transform:translateY(-50%);font-size:1.4rem;color:var(--connection)}
.hub-search kbd{position:absolute;right:16px;top:50%;transform:translateY(-50%);background:var(--cloud);font-size:.75rem}
.hub-quick{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.hub-quick button{font:500 .86rem/1 var(--font);background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.28);border-radius:var(--r-full);padding:8px 14px;cursor:pointer;transition:background .2s}
.hub-quick button:hover{background:rgba(255,255,255,.22)}
.hub-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:30px}
.hub-stats b{display:block;font-size:1.9rem;font-weight:700;color:#fff;line-height:1.1}
.hub-stats span{font-size:.84rem;color:#C9D8F7}

/* 3D scene (parallax layers) */
.scene{position:relative;height:400px;transform-style:preserve-3d;transition:transform .25s ease-out}
.layer{position:absolute;border-radius:var(--r-lg);will-change:transform}
.layer-panel{inset:40px 30px 40px 40px;background:rgba(255,255,255,.95);box-shadow:0 30px 70px rgba(4,16,48,.35);transform:rotate(-2deg);padding:22px;color:var(--body)}
.layer-panel .bar{height:10px;border-radius:5px;background:var(--cloud);margin:10px 0}
.layer-panel .bar.w60{width:60%}.layer-panel .bar.w80{width:80%}.layer-panel .bar.w40{width:40%}
.layer-panel .term{background:var(--navy);border-radius:10px;padding:12px 14px;font:500 .74rem/1.7 var(--mono);color:#9FC0FF;margin-top:14px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.layer-panel .term b{color:var(--growth);font-weight:500}
.layer-panel .term .ok{color:#7EE2A8}
.layer-chip{background:#fff;border-radius:var(--r-md);padding:10px 14px;display:flex;align-items:center;gap:10px;font:600 .84rem/1.3 var(--font);color:var(--navy);box-shadow:0 18px 40px rgba(4,16,48,.28)}
.layer-chip i{font-size:1.3rem;color:var(--connection);background:var(--cloud);border-radius:50%;width:34px;height:34px;display:grid;place-items:center}
.layer-chip.c1{top:6px;right:0;transform:translateZ(80px)}
.layer-chip.c2{bottom:10px;left:0;transform:translateZ(110px)}
.layer-chip.c3{top:46%;right:-14px;transform:translateZ(140px)}
.layer-orb{width:120px;height:120px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#FFE2A3,#FFC857 55%,#E8A93A);top:-24px;left:-10px;transform:translateZ(-60px);opacity:.9;filter:blur(.3px)}
.hub-hero .grid-floor{position:absolute;left:-10%;right:-10%;bottom:-40px;height:260px;background-image:linear-gradient(rgba(255,255,255,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.18) 1px,transparent 1px);background-size:48px 48px;transform:rotateX(68deg);transform-origin:bottom;mask-image:linear-gradient(0deg,#000 10%,transparent 90%);-webkit-mask-image:linear-gradient(0deg,#000 10%,transparent 90%);z-index:1;pointer-events:none}
@media (max-width:900px){.hub-hero .container{grid-template-columns:1fr}.scene{height:320px;max-width:460px}}
@media (max-width:560px){.hub-hero{padding:48px 0 80px}.scene{display:none}}

/* category grid (tilt cards) */
.hub-section{padding:80px 0}
.hub-section.alt{background:var(--surface)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{font-size:clamp(1.5rem,3vw,2rem);font-weight:700}
.section-head h2::after{content:"";display:block;width:44px;height:4px;border-radius:var(--r-full);background:var(--growth);margin-top:12px}
.section-head p{color:var(--muted);max-width:520px}
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;perspective:1000px}
@media (max-width:960px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.cat-grid{grid-template-columns:1fr 1fr;gap:12px}.cat-card{padding:16px}.cat-card p{display:none}.cat-card h3{font-size:.98rem;margin-top:12px}.cat-card .ic{width:44px;height:44px;font-size:1.35rem}.hub-search input{padding-right:20px}.hub-search kbd{display:none}.hub-section{padding:56px 0}}
.tilt{position:relative;transform-style:preserve-3d;transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s;will-change:transform}
.tilt::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:radial-gradient(circle at var(--mx,50%) var(--my,0%),rgba(255,255,255,.55),transparent 55%);opacity:0;transition:opacity .3s}
.tilt:hover::after{opacity:1}
.cat-card{display:block;background:#fff;border:1px solid var(--hairline);border-radius:var(--r-lg);padding:24px;color:var(--body);text-decoration:none!important;height:100%}
.cat-card:hover{box-shadow:var(--shadow-lift);border-color:var(--connection)}
.cat-card .ic{width:52px;height:52px;border-radius:50%;background:var(--cloud);display:grid;place-items:center;font-size:1.6rem;color:var(--navy)}
.cat-card h3{margin-top:16px;font-size:1.15rem}
.cat-card p{font-size:.93rem;color:var(--muted);margin-top:6px;line-height:1.65}
.cat-card .count{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:.82rem;font-weight:600;color:var(--connection)}
.cat-card .ic,.cat-card h3,.cat-card p,.cat-card .count{transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.cat-card:hover .ic{transform:translateZ(40px)}
.cat-card:hover h3{transform:translateZ(24px)}
.cat-card.soon{opacity:.72}
.cat-card .count.zero{color:var(--muted)}

/* posts list */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.filters button{font:500 .9rem/1 var(--font);background:#fff;color:var(--navy);border:1px solid var(--hairline);border-radius:var(--r-full);padding:10px 16px;cursor:pointer;transition:all .2s}
.filters button:hover{border-color:var(--connection)}
.filters button[aria-pressed="true"]{background:var(--navy);border-color:var(--navy);color:#fff}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;perspective:1000px}
@media (max-width:960px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.post-grid{grid-template-columns:1fr}}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden;color:var(--body);text-decoration:none!important;height:100%}
.post-card:hover{box-shadow:var(--shadow-lift);border-color:var(--connection)}
.post-card .thumb{aspect-ratio:1200/630;background:var(--cloud);overflow:hidden}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .pc-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.post-card .pc-meta{display:flex;gap:8px;align-items:center;font-size:.8rem;color:var(--muted)}
.post-card h3{font-size:1.08rem;line-height:1.5;margin-top:10px;color:var(--navy)}
.post-card p{font-size:.92rem;color:var(--muted);line-height:1.65;margin-top:8px;flex:1}
.post-card .more{margin-top:14px;font-weight:600;font-size:.9rem;color:var(--connection)}
.empty{grid-column:1/-1;text-align:center;padding:40px;color:var(--muted);border:1px dashed var(--hairline);border-radius:var(--r-lg)}

/* how-we-write strip */
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.trust-grid .card-soft{background:var(--cloud);border-radius:var(--r-lg);padding:24px}
.trust-grid .card-soft i{font-size:1.6rem;color:var(--navy)}
.trust-grid h3{font-size:1.05rem;margin:12px 0 6px}
.trust-grid p{font-size:.93rem;color:var(--body);line-height:1.65}
@media (max-width:860px){.trust-grid{grid-template-columns:1fr}}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .rv{opacity:1;transform:none}
  .tilt,.scene,.layer{transform:none!important}
}
/* Thai: no tracking / uppercase on Thai glyphs */
html[lang="th"] .eyebrow,html[lang="th"] .toc-side h2,html[lang="th"] .related a span{letter-spacing:.02em}
.form-card p{color:var(--muted)}

@media print{.top-nav,.help,.site-footer,.sticky-help,.post-aside,.progress{display:none!important}}