/* ═══════════════════════════════════════════════════════════════════
   KAIROVOX — SUPREME EDUCATION PLATFORM
   Tema: Obsidian Royale & Imperial Gold — Vanilla CSS murni (mobile-first)
   ═══════════════════════════════════════════════════════════════════ */

/* ── B.2 TOKENS (34 terkunci) ─────────────────────────────────────── */
:root{
  --bg-primary:#0A0D18;
  --bg-section-2:#0F1424;
  --bg-section-3:#0C101E;
  --bg-section-4:#121829;
  --bg-section-5:#0D1220;
  --bg-section-6:#141A2E;
  --bg-card:#1A2238;
  --bg-card-hover:#232C48;
  --bg-nav:#06080F;
  --bg-modal:#0B0F1C;
  --bg-input:#151C30;
  --text-h1:#F5E6B8;
  --text-h2:#EFD98A;
  --text-h3:#E8C870;
  --text-body:#E4E8F2;
  --text-caption:#A8B2CC;
  --text-muted:#6B7897;
  --gold-primary:#D4AF37;
  --gold-light:#F4D96A;
  --gold-dark:#9B7E1F;
  --gold-glow:rgba(212,175,55,0.35);
  --gold-glow-soft:rgba(212,175,55,0.15);
  --sapphire:#4A6FDC;
  --sapphire-light:#7A9BFF;
  --sapphire-glow:rgba(74,111,220,0.3);
  --btn-primary:#D4AF37;
  --btn-primary-hover:#F4D96A;
  --btn-text:#0A0D18;
  --btn-secondary:#4A6FDC;
  --border-default:#2A3858;
  --border-light:#3D4F75;
  --border-gold:rgba(212,175,55,0.42);
  --link-default:#F4D96A;
  --link-hover:#FFE898;
  --success:#3DD68C;
  --error:#FF5A5A;
  --warning:#FFB84D;
  --info:#5EB3FF;
  --f-display:'Playfair Display',Georgia,serif;
  --f-serif:'Cormorant Garamond',Georgia,serif;
  --f-royal:'Marcellus',Georgia,serif;
  --f-body:'Inter',system-ui,sans-serif;
  --f-ui:'Plus Jakarta Sans',system-ui,sans-serif;
  --f-mono:'JetBrains Mono',ui-monospace,monospace;
  --ease-lux:cubic-bezier(.4,0,.2,1);
  --ease-spring:cubic-bezier(.68,-0.55,.27,1.55);
  --ease-reveal:cubic-bezier(.2,.8,.2,1);
}

/* ── RESET & BASE ─────────────────────────────────────────────────── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}
body{
  background:var(--bg-primary);
  color:var(--text-body);
  font:400 clamp(0.95rem,1.5vw,1.1rem)/1.75 var(--f-body);
  overflow-x:hidden;
  min-height:100vh;
}
body.no-scroll{overflow:hidden}
img,svg,canvas,video{max-width:100%;height:auto;display:block}
a{color:var(--link-default);text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;cursor:pointer;background:none;border:none;color:inherit}
input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--gold-primary);color:var(--btn-text)}
:focus-visible{outline:2px solid var(--gold-primary);outline-offset:3px;border-radius:4px}
[hidden]{display:none!important}

/* Scrollbar kustom (W.8) */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--bg-primary)}
::-webkit-scrollbar-thumb{background:var(--gold-dark);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--gold-primary)}
html{scrollbar-width:thin;scrollbar-color:var(--gold-dark) var(--bg-primary)}

/* ── UTILITIES ────────────────────────────────────────────────────── */
.container{max-width:1400px;margin:0 auto;padding-inline:clamp(20px,4vw,40px);position:relative;z-index:1}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:fixed;top:-60px;left:16px;z-index:1000000;background:var(--gold-primary);color:var(--btn-text);padding:10px 18px;border-radius:8px;font:600 .9rem var(--f-ui);transition:top .25s}
.skip-link:focus-visible{top:12px}
.gold-text{color:var(--gold-light)}
.mono{font-family:var(--f-mono)}
#scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--gold-primary),var(--sapphire-light));z-index:99995;transition:width .12s linear}
.noscript-note{position:fixed;bottom:0;left:0;right:0;background:var(--bg-nav);color:var(--gold-light);text-align:center;padding:14px;z-index:999994;font-family:var(--f-ui)}

/* ── E.0 LOADER ───────────────────────────────────────────────────── */
.loader{position:fixed;inset:0;z-index:999999;display:flex;align-items:center;justify-content:center;
  background:
    radial-gradient(60% 50% at 20% 15%,var(--gold-glow-soft),transparent 70%),
    radial-gradient(55% 45% at 85% 85%,var(--sapphire-glow),transparent 70%),
    var(--bg-primary);
  transition:opacity .5s var(--ease-lux),visibility .5s;
}
.loader.done{opacity:0;visibility:hidden;pointer-events:none}
.loader-inner{display:flex;flex-direction:column;align-items:center;gap:22px;padding:20px;text-align:center}
.loader-logo-wrap{position:relative;width:132px;height:132px;display:grid;place-items:center}
.loader-logo{border-radius:50%;animation:pulseGlow 2s ease-in-out infinite;box-shadow:0 0 40px var(--gold-glow)}
.loader-ring{position:absolute;inset:0;border-radius:50%;border:2px solid transparent;border-top-color:var(--gold-primary);border-right-color:var(--gold-light);animation:spin 1.4s linear infinite}
.loader-name{font:700 clamp(1.5rem,4vw,2rem) var(--f-display);color:var(--text-h1);letter-spacing:.35em;text-indent:.35em}
.loader-bar{width:240px;height:6px;border-radius:99px;background:var(--bg-input);overflow:hidden;border:1px solid var(--border-default)}
.loader-bar span{display:block;height:100%;width:40%;border-radius:99px;background:linear-gradient(90deg,var(--gold-primary),var(--sapphire-light),var(--gold-light));animation:barSlide 1.3s var(--ease-lux) infinite}
.loader-text{font:italic 400 clamp(1rem,2vw,1.3rem) var(--f-royal);color:var(--gold-light);display:flex;align-items:center;gap:8px}
.loader-dots{display:inline-flex;gap:6px}
.loader-dots i{width:7px;height:7px;border-radius:50%;background:var(--gold-primary);animation:dotPulse 1.2s ease-in-out infinite}
.loader-dots i:nth-child(2){animation-delay:.2s}
.loader-dots i:nth-child(3){animation-delay:.4s}

/* ── BRAND (logo fixed — bukan nav horizontal) ────────────────────── */
.brand{position:fixed;top:20px;left:20px;z-index:99990;display:flex;align-items:center;gap:10px;padding:8px 14px 8px 8px;background:rgba(6,8,15,.82);backdrop-filter:blur(8px);border:1px solid var(--border-gold);border-radius:14px;box-shadow:0 4px 20px rgba(0,0,0,.5);transition:box-shadow .3s,transform .3s}
.brand:hover{box-shadow:0 4px 28px var(--gold-glow);transform:translateY(-1px)}
.brand img{border-radius:50%}
.brand-text{font:700 .95rem var(--f-display);color:var(--text-h1);letter-spacing:.18em}
.brand-text em{font-style:normal;color:var(--gold-light)}

/* ── D.2 HAMBURGER (tampil di SEMUA perangkat) ────────────────────── */
.hamburger{position:fixed;top:20px;right:20px;z-index:99997;width:48px;height:48px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:var(--bg-nav);border:1px solid var(--border-gold);border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.5);transition:box-shadow .3s,transform .3s}
.hamburger:hover{box-shadow:0 6px 26px var(--gold-glow);transform:translateY(-1px)}
.hamburger span{display:block;width:22px;height:2px;background:var(--gold-primary);border-radius:2px;transition:transform .4s var(--ease-spring),opacity .3s}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0;transform:scaleX(.2)}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(min-width:1025px){.hamburger{width:54px;height:54px}}

/* ── D.3 OVERLAY + SIDEBAR ────────────────────────────────────────── */
.menu-overlay{position:fixed;inset:0;z-index:99996;background:rgba(0,0,0,.75);backdrop-filter:blur(4px);opacity:0;transition:opacity .35s}
.menu-overlay.show{opacity:1}
.sidebar{position:fixed;top:0;right:0;z-index:99998;width:min(85vw,400px);max-width:420px;height:100vh;height:100dvh;background:var(--bg-nav);border-left:1px solid var(--border-gold);display:flex;flex-direction:column;transform:translateX(105%);transition:transform .4s var(--ease-spring);box-shadow:-20px 0 60px rgba(0,0,0,.6)}
.sidebar.open{transform:translateX(0)}
.sidebar-head{display:flex;align-items:center;gap:12px;padding:24px;border-bottom:1px solid var(--border-default);flex-shrink:0}
.sidebar-head img{border-radius:50%;box-shadow:0 0 18px var(--gold-glow-soft)}
.sidebar-title{display:flex;flex-direction:column;gap:2px;flex:1}
.sidebar-title strong{font:700 1.05rem var(--f-display);color:var(--text-h1);letter-spacing:.22em}
.sidebar-title small{font:italic 400 .78rem var(--f-royal);color:var(--gold-light)}
.sidebar-close{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--border-default);border-radius:10px;color:var(--gold-primary);transition:background .3s,color .3s;flex-shrink:0}
.sidebar-close:hover{background:var(--bg-card);color:var(--gold-light)}
.sidebar-nav{flex:1;overflow-y:auto;overscroll-behavior:contain}
.sidebar-nav::-webkit-scrollbar{width:5px}
.menu-list{display:flex;flex-direction:column}
.menu-list a{display:flex;align-items:center;gap:14px;padding:14px 24px;color:var(--text-body);font:500 .95rem var(--f-ui);border-bottom:1px solid var(--border-default);border-left:3px solid transparent;transition:background .25s,color .25s,border-color .25s,padding-left .25s}
.menu-list a i{width:20px;text-align:center;color:var(--gold-primary);transition:color .25s,transform .25s}
.menu-list a .mi-num{font:400 .7rem var(--f-mono);color:var(--text-muted);width:18px;flex-shrink:0}
.menu-list a:hover{background:var(--bg-card);color:var(--gold-light);border-left-color:var(--gold-primary);padding-left:28px}
.menu-list a:hover i{color:var(--gold-light);transform:scale(1.12)}
.menu-list a.active{border-left-color:var(--gold-primary);color:var(--gold-primary);background:rgba(212,175,55,.06)}
.sidebar-foot{padding:18px 24px;border-top:1px solid var(--border-default);flex-shrink:0}
.sf-line{font:400 .8rem var(--f-ui);color:var(--text-caption);display:flex;align-items:center;gap:8px;padding:3px 0}
.sf-line i{color:var(--gold-primary);width:16px;text-align:center}
.sf-line strong{color:var(--gold-light);font-family:var(--f-mono)}

/* ── BUTTONS (W.4) ────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 26px;border-radius:12px;font:600 .92rem var(--f-ui);letter-spacing:.5px;transition:all .2s var(--ease-lux);border:1px solid transparent;text-align:center}
.btn-primary{background:var(--btn-primary);color:var(--btn-text);box-shadow:0 6px 22px var(--gold-glow-soft)}
.btn-primary:hover{background:var(--btn-primary-hover);transform:scale(1.03);box-shadow:0 10px 32px var(--gold-glow)}
.btn-primary:active{transform:scale(.97)}
.btn:focus-visible{outline:3px solid var(--gold-primary);outline-offset:3px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-ghost{border-color:var(--border-gold);color:var(--gold-light);background:rgba(212,175,55,.05)}
.btn-ghost:hover{background:rgba(212,175,55,.14);border-color:var(--gold-primary);transform:scale(1.03);box-shadow:0 8px 26px var(--gold-glow-soft)}
.btn-ghost:active{transform:scale(.97)}
.btn-mini{padding:9px 16px;font-size:.8rem;border-radius:9px;border:1px solid var(--border-default);color:var(--text-caption);background:var(--bg-input)}
.btn-mini:hover{color:var(--gold-light);border-color:var(--border-gold)}
.btn-lg{padding:17px 34px;font-size:1rem}
.btn-block{width:100%;margin-top:12px}

/* ── INPUTS (W.5) ─────────────────────────────────────────────────── */
.input,.fld input,.fld select{width:100%;background:var(--bg-input);border:2px solid var(--border-default);border-radius:10px;padding:13px 17px;color:var(--text-body);font-family:var(--f-body);transition:border-color .25s,box-shadow .25s}
.input:focus,.fld input:focus,.fld select:focus{border-color:var(--gold-primary);box-shadow:0 0 0 4px var(--gold-glow);outline:none}
.input.mono,.fld input.mono{font-family:var(--f-mono)}
.fld{display:flex;flex-direction:column;gap:7px;margin-top:12px}
.fld span{font:600 .82rem var(--f-ui);color:var(--text-caption);letter-spacing:.4px}
select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23D4AF37' stroke-width='2'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px}

/* ── BADGES ───────────────────────────────────────────────────────── */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:99px;font:600 .68rem var(--f-ui);letter-spacing:.6px;text-transform:uppercase}
.badge-cat{background:rgba(74,111,220,.14);color:var(--sapphire-light);border:1px solid rgba(74,111,220,.35)}
.badge-pemula{background:rgba(61,214,140,.12);color:var(--success);border:1px solid rgba(61,214,140,.3)}
.badge-menengah{background:rgba(255,184,77,.12);color:var(--warning);border:1px solid rgba(255,184,77,.3)}
.badge-lanjutan{background:rgba(255,90,90,.12);color:var(--error);border:1px solid rgba(255,90,90,.3)}
.badge-featured{background:var(--gold-primary);color:var(--btn-text);border:1px solid var(--gold-light)}

/* ── SECTION BASE + PATTERNS (B.3 — beda tiap section, pure CSS) ──── */
.section{position:relative;padding-block:clamp(64px,9vw,110px);contain:content;overflow:hidden}
.section::before{content:"";position:absolute;inset:0;pointer-events:none;z-index:0}

#beranda{background:
  radial-gradient(45% 40% at 12% 18%,rgba(212,175,55,.14),transparent 70%),
  radial-gradient(40% 42% at 88% 12%,rgba(74,111,220,.16),transparent 70%),
  radial-gradient(50% 45% at 50% 100%,rgba(212,175,55,.08),transparent 70%),
  var(--bg-primary)}
#beranda::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E")}

#fitur{background:var(--bg-section-2)}
#fitur::before{background-image:repeating-linear-gradient(45deg,rgba(212,175,55,.05) 0 1px,transparent 1px 15px)}

#jalur-belajar{background:var(--bg-section-3)}
#jalur-belajar::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='96' viewBox='0 0 56 96'%3E%3Cpath d='M28 4 52 18v28L28 60 4 46V18Z' fill='none' stroke='%23D4AF37' stroke-opacity='0.07'/%3E%3Cpath d='M28 60v34M4 46v28l24 14 24-14V46' fill='none' stroke='%23D4AF37' stroke-opacity='0.07'/%3E%3C/svg%3E");background-size:56px 96px}

#modul-programming{background:var(--bg-section-4)}
#modul-programming::before{background-image:radial-gradient(rgba(212,175,55,.09) 1px,transparent 1.6px);background-size:24px 24px}

#modul-web{background:var(--bg-section-5)}
#modul-web::before{background-image:linear-gradient(rgba(122,155,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(122,155,255,.055) 1px,transparent 1px);background-size:28px 28px}

#modul-jaringan{background:var(--bg-section-6)}
#modul-jaringan::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 120 120'%3E%3Cg fill='none' stroke='%234A6FDC' stroke-opacity='0.09'%3E%3Cpath d='M10 10h40v30h30M10 60v40h30M90 20v50h20M60 105V70'/%3E%3C/g%3E%3Cg fill='%234A6FDC' fill-opacity='0.09'%3E%3Ccircle cx='10' cy='10' r='3'/%3E%3Ccircle cx='80' cy='40' r='3'/%3E%3Ccircle cx='40' cy='100' r='3'/%3E%3Ccircle cx='110' cy='70' r='3'/%3E%3Ccircle cx='60' cy='70' r='3'/%3E%3C/g%3E%3C/svg%3E");background-size:120px 120px}

#modul-database{background:var(--bg-section-2)}
#modul-database::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='44' height='44' viewBox='0 0 44 44'%3E%3Cpath d='M22 14v16M14 22h16' stroke='%23D4AF37' stroke-opacity='0.06' stroke-width='2'/%3E%3C/svg%3E");background-size:44px 44px}

#modul-ai{background:var(--bg-section-3)}
#modul-ai::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cg stroke='%237A9BFF' stroke-opacity='0.07' fill='none'%3E%3Cpath d='M20 30 80 50 140 20M20 130 80 110l60 30M20 30v100M140 20v120M20 30l120 90M20 130 80 50'/%3E%3C/g%3E%3Cg fill='%23D4AF37' fill-opacity='0.09'%3E%3Ccircle cx='20' cy='30' r='4'/%3E%3Ccircle cx='80' cy='50' r='4'/%3E%3Ccircle cx='140' cy='20' r='4'/%3E%3Ccircle cx='20' cy='130' r='4'/%3E%3Ccircle cx='80' cy='110' r='4'/%3E%3Ccircle cx='140' cy='140' r='4'/%3E%3C/g%3E%3C/svg%3E");background-size:160px 160px}

#modul-design{background:var(--bg-section-4)}
#modul-design::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cpath d='M0 0h80v80H0zM0 0l80 80M80 0 0 80' fill='none' stroke='%23D4AF37' stroke-opacity='0.05'/%3E%3C/svg%3E");background-size:80px 80px}

#http-vs-https{background:var(--bg-section-5)}
#http-vs-https::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='150' height='150' viewBox='0 0 150 150'%3E%3Cg fill='none' stroke='%23D4AF37' stroke-opacity='0.06'%3E%3Crect x='16' y='30' width='36' height='28' rx='5'/%3E%3Cpath d='M24 30v-8a10 10 0 0 1 20 0v8'/%3E%3Ccircle cx='34' cy='44' r='3'/%3E%3Cpath d='M108 84l24 8v16c0 16-12 26-24 32-12-6-24-16-24-32V92Z'/%3E%3Cpath d='M100 108l6 6 12-14'/%3E%3C/g%3E%3C/svg%3E");background-size:150px 150px}

#timeline{background:var(--bg-section-6)}
#timeline::before{background-image:repeating-linear-gradient(90deg,rgba(212,175,55,.05) 0 1px,transparent 1px 64px)}

#kalkulator{background:var(--bg-section-2)}
#kalkulator::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cg font-family='monospace' fill='%237A9BFF' fill-opacity='0.06'%3E%3Ctext x='8' y='30' font-size='15'%3E101%3C/text%3E%3Ctext x='52' y='64' font-size='13'%3E0x2F%3C/text%3E%3Ctext x='14' y='90' font-size='12'%3E42%3C/text%3E%3C/g%3E%3Cpath d='M0 50h100M50 0v100' stroke='%23D4AF37' stroke-opacity='0.05'/%3E%3C/svg%3E");background-size:100px 100px}

#quiz{background:var(--bg-section-3)}
#quiz::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='130' height='130' viewBox='0 0 130 130'%3E%3Cg fill='%23F4D96A' fill-opacity='0.07'%3E%3Cpath d='M30 20l3 8 8 3-8 3-3 8-3-8-8-3 8-3z'/%3E%3Cpath d='M95 58l2.5 6.5 6.5 2.5-6.5 2.5L95 76l-2.5-6.5L86 67l6.5-2.5z'/%3E%3Cpath d='M44 100l2 5 5 2-5 2-2 5-2-5-5-2 5-2z'/%3E%3C/g%3E%3C/svg%3E");background-size:130px 130px}

#artikel{background:var(--bg-section-4)}
#artikel::before{background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.014) 0 2px,transparent 2px 7px),repeating-linear-gradient(90deg,rgba(212,175,55,.035) 0 1px,transparent 1px 46px)}

#statistik{background:var(--bg-section-5)}
#statistik::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='40' viewBox='0 0 120 40'%3E%3Cpath d='M0 20q15-14 30 0t30 0 30 0 30 0' fill='none' stroke='%23D4AF37' stroke-opacity='0.07'/%3E%3C/svg%3E");background-size:120px 40px}

#pencapaian{background:var(--bg-section-6)}
#pencapaian::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='130' height='130' viewBox='0 0 130 130'%3E%3Cg fill='none' stroke='%23D4AF37' stroke-opacity='0.06'%3E%3Ccircle cx='65' cy='80' r='20'/%3E%3Cpath d='M50 65 40 30h18l7 18 7-18h18L80 65M57 80l6 6 12-14'/%3E%3C/g%3E%3C/svg%3E");background-size:130px 130px}

#faq{background:var(--bg-section-2)}
#faq::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='96' height='96' viewBox='0 0 96 96'%3E%3Ctext x='18' y='52' font-family='Georgia,serif' font-size='40' fill='%23D4AF37' fill-opacity='0.055'%3E?%3C/text%3E%3Ctext x='58' y='86' font-family='Georgia,serif' font-size='26' fill='%237A9BFF' fill-opacity='0.055'%3E?%3C/text%3E%3C/svg%3E");background-size:96px 96px}

/* ── SECTION HEAD ─────────────────────────────────────────────────── */
.section-head{max-width:760px;margin-bottom:clamp(36px,5vw,56px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:600 .78rem var(--f-ui);letter-spacing:3px;text-transform:uppercase;color:var(--gold-primary);margin-bottom:14px}
.eyebrow i{font-size:.9rem}
.section-head h2{font:600 clamp(1.7rem,4vw,3rem)/1.2 var(--f-display);color:var(--text-h2);margin-bottom:16px}
.section-head .lead{font-size:clamp(.95rem,1.5vw,1.08rem);color:var(--text-caption);max-width:640px}
.section-head::after{content:"";display:block;width:88px;height:3px;margin-top:22px;border-radius:3px;background:linear-gradient(90deg,var(--gold-primary),var(--sapphire),transparent)}

/* ── REVEAL (W.1) ─────────────────────────────────────────────────── */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease-reveal),transform .7s var(--ease-reveal)}
.reveal.revealed{opacity:1;transform:translateY(0)}

/* ── HERO ─────────────────────────────────────────────────────────── */
.hero{min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding-top:110px}
.hero-inner{display:grid;grid-template-columns:1fr;gap:48px;align-items:center}
.hero-title{font:700 clamp(2.6rem,7vw,4.6rem)/1.05 var(--f-display);color:var(--text-h1);letter-spacing:.06em;background:linear-gradient(115deg,var(--text-h1) 20%,var(--gold-light) 45%,var(--text-h1) 70%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;background-size:200% 100%;animation:shimmerText 7s linear infinite}
.hero-tagline{font:italic 400 clamp(1.05rem,2.2vw,1.35rem) var(--f-royal);color:var(--gold-light);margin-top:14px}
.hero-sub{margin-top:18px;color:var(--text-caption);max-width:560px;font-size:clamp(.95rem,1.5vw,1.08rem)}
.hero-sub strong{color:var(--text-h3)}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:clamp(24px,4vw,48px);margin-top:44px}
.hero-stats div{display:flex;flex-direction:column;gap:2px}
.hero-stats dt{font:700 clamp(1.6rem,3.4vw,2.3rem) var(--f-mono);color:var(--gold-light)}
.hero-stats dt i{color:var(--gold-primary);font-style:normal;font-size:.7em}
.hero-stats dd{font:500 .8rem var(--f-ui);letter-spacing:1.5px;text-transform:uppercase;color:var(--text-muted)}
.hero-ornament{display:flex;justify-content:center}
.ornament-svg{width:clamp(240px,40vw,500px);pointer-events:none;overflow:visible}
.orn-spin-slow{animation:spin360 90s linear infinite;transform-box:fill-box;transform-origin:center}
.orn-spin-rev{animation:spin360rev 60s linear infinite;transform-box:fill-box;transform-origin:center}
.orn-core-pulse{animation:corePulse 4s ease-in-out infinite;transform-box:fill-box;transform-origin:center}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--border-gold);border-radius:50%;color:var(--gold-primary);animation:floatY 2.4s ease-in-out infinite;z-index:2}
.scroll-hint:hover{color:var(--gold-light);box-shadow:0 0 24px var(--gold-glow)}

/* ── CARDS (P.2 luxury, anti-collision) ───────────────────────────── */
.card-grid,.module-grid,.calc-grid,.ach-grid,.article-grid{display:grid;grid-template-columns:1fr;gap:20px;align-items:stretch}
.lux-card{position:relative;display:flex;flex-direction:column;gap:16px;background:var(--bg-card);border:1px solid var(--border-default);border-radius:16px;padding:28px 24px;overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.05);transition:transform .35s var(--ease-lux),box-shadow .35s var(--ease-lux),background-color .35s,border-color .35s}
.lux-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--gold-primary),var(--sapphire));opacity:.9}
.lux-card:hover{transform:translateY(-4px);background:var(--bg-card-hover);border-color:var(--border-light);box-shadow:0 18px 48px rgba(0,0,0,.55),0 0 0 1px var(--gold-glow-soft),0 8px 40px var(--gold-glow-soft)}
.tiltable{transform-style:preserve-3d;will-change:auto}
.lux-card h3{font:600 clamp(1.15rem,2vw,1.4rem)/1.35 var(--f-serif);color:var(--text-h3)}
.lux-card p{color:var(--text-caption);font-size:.94rem;line-height:1.7}

/* Feature card */
.feature-card .fc-icon{width:56px;height:56px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,rgba(212,175,55,.18),rgba(74,111,220,.14));border:1px solid var(--border-gold);color:var(--gold-primary);font-size:1.5rem;flex-shrink:0}
.feature-card p{-webkit-line-clamp:4;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}

/* Path cards */
.path-wrap{position:relative}
.path-list{display:grid;grid-template-columns:1fr;gap:24px;counter-reset:step;position:relative}
.path-card{align-items:flex-start;text-align:left}
.pc-step{position:absolute;top:18px;right:20px;font:700 2rem var(--f-mono);color:transparent;-webkit-text-stroke:1px var(--border-gold);opacity:.85}
.pc-icon{font-size:1.7rem;color:var(--gold-primary)}
.path-card p{-webkit-line-clamp:4;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
@media(min-width:900px){
  .path-wrap::before{content:"";position:absolute;top:50%;left:4%;right:4%;height:2px;background:linear-gradient(90deg,transparent,var(--gold-primary),var(--sapphire),transparent);opacity:.5;transform:translateY(-50%)}
  .path-list{grid-template-columns:repeat(3,1fr);gap:28px}
}
@media(min-width:1281px){.path-list{grid-template-columns:repeat(6,1fr)}}

/* Module cards */
.module-card .mc-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.mc-num{min-width:40px;height:40px;display:grid;place-items:center;border-radius:50%;background:radial-gradient(circle at 32% 28%,var(--gold-light),var(--gold-primary) 58%,var(--gold-dark));color:var(--btn-text);font:700 .8rem var(--f-mono);box-shadow:0 4px 14px var(--gold-glow-soft);flex-shrink:0}
.mc-bookmark{width:34px;height:34px;display:grid;place-items:center;border-radius:9px;border:1px solid transparent;color:var(--text-muted);transition:color .25s,border-color .25s;flex-shrink:0}
.mc-bookmark:hover{color:var(--gold-light);border-color:var(--border-gold)}
.mc-bookmark.on{color:var(--gold-light)}
.mc-icon{font-size:2rem;color:var(--gold-primary);margin-top:2px}
.mc-title{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;min-height:2.7em}
.mc-desc{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:4;overflow:hidden}
.mc-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.mc-btn{margin-top:4px;padding:11px 18px;font-size:.82rem;justify-content:center}
.mc-visited{position:absolute;bottom:14px;right:16px;color:var(--success);font-size:.95rem;opacity:0;transform:scale(.5);transition:opacity .3s,transform .3s}
.module-card.visited .mc-visited{opacity:1;transform:scale(1)}
.module-card.featured-module{border-color:var(--gold-primary);box-shadow:0 8px 34px var(--gold-glow-soft)}

/* ── HTTP VS HTTPS ────────────────────────────────────────────────── */
.http-intro{max-width:860px;display:flex;flex-direction:column;gap:18px;margin-bottom:40px}
.http-intro p{color:var(--text-body)}
.table-wrap{overflow-x:auto;border:1px solid var(--border-gold);border-radius:18px;background:var(--bg-card);box-shadow:0 14px 44px rgba(0,0,0,.45);margin-bottom:44px;-webkit-overflow-scrolling:touch}
.compare-table{width:100%;min-width:640px;border-collapse:collapse}
.compare-table th,.compare-table td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--border-default);font-size:.92rem;vertical-align:top}
.compare-table thead th{background:linear-gradient(180deg,rgba(212,175,55,.14),rgba(212,175,55,.04));color:var(--gold-light);font:600 .85rem var(--f-ui);letter-spacing:1px;text-transform:uppercase;border-bottom:2px solid var(--border-gold)}
.compare-table tbody th{color:var(--text-h3);font:600 .88rem var(--f-ui);white-space:nowrap}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table tbody tr:hover{background:rgba(212,175,55,.05)}
.compare-table td code{font-family:var(--f-mono);color:var(--sapphire-light);background:var(--bg-input);padding:2px 8px;border-radius:6px}
.compare-table .good{color:var(--success);font-weight:600}
.compare-table .bad{color:var(--error);font-weight:600}
.http-block{background:rgba(26,34,56,.55);border:1px solid var(--border-default);border-radius:18px;padding:clamp(24px,4vw,36px);margin-bottom:36px;backdrop-filter:blur(4px)}
.http-block h3{display:flex;align-items:center;gap:12px;font:600 clamp(1.2rem,2.4vw,1.6rem) var(--f-serif);color:var(--text-h3);margin-bottom:18px}
.http-block h3 i{color:var(--gold-primary)}
.http-block p{color:var(--text-caption);margin-bottom:14px}
.handshake-fig{overflow-x:auto;padding:8px 0}
.handshake-svg{min-width:560px;width:100%;max-width:820px;margin:0 auto}
.reason-list{display:grid;grid-template-columns:1fr;gap:14px;counter-reset:reason}
.reason-list li{position:relative;padding:16px 18px 16px 58px;background:var(--bg-input);border:1px solid var(--border-default);border-radius:12px;color:var(--text-caption);font-size:.94rem;line-height:1.65}
.reason-list li::before{counter-increment:reason;content:counter(reason);position:absolute;left:14px;top:14px;width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:radial-gradient(circle at 32% 28%,var(--gold-light),var(--gold-primary) 58%,var(--gold-dark));color:var(--btn-text);font:700 .82rem var(--f-mono)}
.reason-list li strong{color:var(--text-h3)}
.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{position:relative;padding-left:30px;color:var(--text-caption);font-size:.94rem;line-height:1.65}
.check-list li::before{content:"\f058";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:2px;color:var(--gold-primary)}
.check-list li strong{color:var(--text-h3)}
.ssl-types{display:flex;flex-direction:column;gap:14px}
.ssl-types dt{font:600 .92rem var(--f-ui);color:var(--gold-light);margin-bottom:3px}
.ssl-types dd{color:var(--text-caption);font-size:.9rem;line-height:1.6}
.http-split{display:grid;grid-template-columns:1fr;gap:24px}
.http-split .http-block{margin-bottom:0}
.http-cta{text-align:center;padding:34px 20px;border:1px dashed var(--border-gold);border-radius:18px;background:radial-gradient(60% 100% at 50% 0,var(--gold-glow-soft),transparent 70%)}
.http-cta p{font:italic 500 clamp(1.1rem,2.2vw,1.4rem) var(--f-serif);color:var(--text-h3);margin-bottom:20px}

/* ── TIMELINE ─────────────────────────────────────────────────────── */
.timeline-track{position:relative;padding-block:8px}
.timeline-track::before{content:"";position:absolute;top:0;bottom:0;left:14px;width:2px;background:linear-gradient(180deg,transparent,var(--gold-primary) 6%,var(--sapphire) 94%,transparent);opacity:.8}
.tl-item{position:relative;padding:0 0 26px 46px}
.tl-item::after{content:"";position:absolute;top:22px;left:8px;width:14px;height:14px;border-radius:50%;background:var(--bg-primary);border:2px solid var(--gold-primary);box-shadow:0 0 14px var(--gold-glow)}
.tl-card{background:rgba(26,34,56,.72);border:1px solid var(--border-default);border-radius:14px;padding:18px 20px;transition:border-color .3s,box-shadow .3s,transform .3s}
.tl-card:hover{border-color:var(--border-gold);box-shadow:0 10px 34px rgba(0,0,0,.45);transform:translateY(-2px)}
.tl-year{display:inline-block;font:700 .8rem var(--f-mono);color:var(--btn-text);background:linear-gradient(135deg,var(--gold-light),var(--gold-dark));padding:4px 12px;border-radius:99px;margin-bottom:9px}
.tl-card h3{font:600 1.06rem var(--f-serif);color:var(--text-h3);margin-bottom:6px}
.tl-card p{font-size:.88rem;color:var(--text-caption);line-height:1.6}
@media(min-width:901px){
  .timeline-track::before{left:50%;transform:translateX(-1px)}
  .tl-item{width:50%;padding:0 0 30px 0}
  .tl-item.tl-left{padding-right:44px;text-align:right}
  .tl-item.tl-right{margin-left:50%;padding-left:44px;text-align:left}
  .tl-item.tl-left::after{left:auto;right:-8px}
  .tl-item.tl-right::after{left:-7px}
}

/* ── KALKULATOR ───────────────────────────────────────────────────── */
.calc-card .calc-desc{color:var(--text-muted);font-size:.88rem}
.calc-out{margin-top:16px;padding:16px;border-radius:12px;background:var(--bg-input);border:1px solid var(--border-default);font-family:var(--f-mono);font-size:.86rem;line-height:1.8;color:var(--text-body);min-height:68px;white-space:pre-wrap;word-break:break-word}
.calc-out:empty::before{content:"Hasil akan tampil di sini…";color:var(--text-muted);font-family:var(--f-body);font-style:italic}
.calc-out .ok{color:var(--success);font-weight:700}
.calc-out .warn{color:var(--warning);font-weight:700}
.calc-out .err{color:var(--error);font-weight:700}
.calc-out .gold{color:var(--gold-light);font-weight:700}
.calc-out table{width:100%;border-collapse:collapse;margin-top:10px}
.calc-out th,.calc-out td{border:1px solid var(--border-default);padding:7px 10px;font-size:.82rem;text-align:center}
.calc-out th{color:var(--gold-light);background:rgba(212,175,55,.08)}
.ipk-rows{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.ipk-row{display:grid;grid-template-columns:1fr 78px 96px 36px;gap:8px;align-items:center}
.ipk-row input,.ipk-row select{background:var(--bg-input);border:2px solid var(--border-default);border-radius:9px;padding:10px 12px;color:var(--text-body);font-size:.88rem;min-width:0}
.ipk-row input:focus,.ipk-row select:focus{border-color:var(--gold-primary);outline:none}
.ipk-row .row-del{width:36px;height:40px;display:grid;place-items:center;border-radius:9px;color:var(--error);border:1px solid var(--border-default);transition:border-color .25s}
.ipk-row .row-del:hover{border-color:var(--error)}
.conv-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:6px}
.conv-cell{background:rgba(74,111,220,.08);border:1px solid rgba(74,111,220,.25);border-radius:9px;padding:9px 11px}
.conv-cell small{display:block;color:var(--text-muted);font-size:.68rem;letter-spacing:1px;text-transform:uppercase}
.conv-cell b{color:var(--gold-light);word-break:break-all;font-size:.84rem}

/* ── QUIZ ─────────────────────────────────────────────────────────── */
.quiz-app{max-width:860px;margin:0 auto;padding:clamp(26px,4vw,44px)}
.quiz-panel{display:flex;flex-direction:column;gap:18px;align-items:stretch}
#quiz-start{align-items:center;text-align:center}
.quiz-hero-icon{font-size:3.4rem;color:var(--gold-primary);filter:drop-shadow(0 6px 18px var(--gold-glow))}
#quiz-start h3{font:600 clamp(1.4rem,3vw,2rem) var(--f-display);color:var(--text-h1)}
.quiz-lead{color:var(--text-caption);max-width:520px}
.quiz-name-fld{width:100%;max-width:420px}
.quiz-toggle{display:flex;align-items:center;gap:10px;font:500 .88rem var(--f-ui);color:var(--text-caption);cursor:pointer}
.quiz-toggle input{accent-color:var(--gold-primary);width:18px;height:18px;cursor:pointer}
.quiz-high{font:500 .85rem var(--f-mono);color:var(--gold-light)}
.quiz-top{display:flex;flex-direction:column;gap:10px}
.quiz-meta{display:flex;justify-content:space-between;align-items:center;font:600 .85rem var(--f-ui);color:var(--text-caption)}
.quiz-timer{display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:99px;border:1px solid var(--border-gold);color:var(--gold-light);font-family:var(--f-mono)}
.quiz-timer.danger{border-color:var(--error);color:var(--error);animation:timerBlink 1s steps(2) infinite}
.quiz-bar{height:8px;border-radius:99px;background:var(--bg-input);overflow:hidden;border:1px solid var(--border-default)}
.quiz-bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold-primary),var(--sapphire-light));border-radius:99px;transition:width .45s var(--ease-lux)}
.quiz-cat{font:600 .72rem var(--f-ui);letter-spacing:2px;text-transform:uppercase;color:var(--sapphire-light)}
.quiz-question{font:600 clamp(1.15rem,2.4vw,1.5rem)/1.5 var(--f-serif);color:var(--text-h2)}
.quiz-options{display:grid;grid-template-columns:1fr;gap:12px}
.quiz-opt{display:flex;align-items:center;gap:14px;padding:15px 18px;background:var(--bg-input);border:1px solid var(--border-default);border-radius:12px;text-align:left;color:var(--text-body);font-size:.95rem;transition:border-color .25s,background .25s,transform .2s}
.quiz-opt .opt-key{min-width:30px;height:30px;display:grid;place-items:center;border-radius:8px;background:rgba(212,175,55,.14);color:var(--gold-light);font:700 .8rem var(--f-mono);flex-shrink:0}
.quiz-opt:hover{border-color:var(--border-gold);background:var(--bg-card-hover);transform:translateX(4px)}
.quiz-opt.locked{pointer-events:none}
.quiz-opt.correct{border-color:var(--success);background:rgba(61,214,140,.13)}
.quiz-opt.correct .opt-key{background:var(--success);color:var(--btn-text)}
.quiz-opt.wrong{border-color:var(--error);background:rgba(255,90,90,.13)}
.quiz-opt.wrong .opt-key{background:var(--error);color:var(--btn-text)}
.quiz-feedback{min-height:26px;font:600 .9rem var(--f-ui)}
.quiz-feedback.good{color:var(--success)}
.quiz-feedback.bad{color:var(--error)}
.quiz-res-label{font:600 .8rem var(--f-ui);letter-spacing:2.5px;text-transform:uppercase;color:var(--text-muted);text-align:center}
.quiz-res-score{text-align:center;font:700 clamp(3rem,8vw,4.6rem)/1 var(--f-mono);color:var(--gold-light);text-shadow:0 0 34px var(--gold-glow)}
.quiz-res-score small{font-size:.4em;color:var(--gold-primary)}
.quiz-grade{text-align:center;font:600 clamp(1.1rem,2.6vw,1.5rem) var(--f-ui)}
.quiz-grade i{margin-right:10px}
.quiz-grade.g-s{color:var(--gold-light)}
.quiz-grade.g-a{color:var(--warning)}
.quiz-grade.g-b{color:var(--success)}
.quiz-grade.g-c{color:var(--info)}
.quiz-grade.g-d{color:var(--text-caption)}
.quiz-grade.g-e{color:var(--error)}
.quiz-res-detail{text-align:center;color:var(--text-caption);font-size:.92rem}
.quiz-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cert-wrap{margin-top:8px;border:1px solid var(--border-gold);border-radius:14px;overflow:hidden;box-shadow:0 18px 50px rgba(0,0,0,.55)}
#cert-canvas{width:100%;height:auto;display:block}
.quiz-review-title{font:600 1.15rem var(--f-serif);color:var(--text-h3);margin-top:16px;display:flex;gap:10px;align-items:center}
.quiz-review-title i{color:var(--gold-primary)}
.quiz-review{display:flex;flex-direction:column;gap:14px}
.qr-item{background:var(--bg-input);border:1px solid var(--border-default);border-left:4px solid var(--border-light);border-radius:12px;padding:16px 18px}
.qr-item.good{border-left-color:var(--success)}
.qr-item.bad{border-left-color:var(--error)}
.qr-item .rq{font:600 .95rem var(--f-ui);color:var(--text-body);margin-bottom:8px}
.qr-item p{font-size:.86rem;color:var(--text-caption);line-height:1.6;margin-top:4px}
.qr-item .ans-good{color:var(--success);font-weight:600}
.qr-item .ans-bad{color:var(--error);font-weight:600}
.qr-item .exp{color:var(--text-muted);font-style:italic}

/* ── ARTIKEL ──────────────────────────────────────────────────────── */
.article-grid{grid-template-columns:1fr}
.article-card .ac-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.ac-icon{width:46px;height:46px;display:grid;place-items:center;border-radius:12px;background:linear-gradient(135deg,rgba(212,175,55,.18),rgba(74,111,220,.14));border:1px solid var(--border-gold);color:var(--gold-primary);font-size:1.15rem;flex-shrink:0}
.ac-meta{font:500 .74rem var(--f-ui);color:var(--text-muted);letter-spacing:.4px;display:flex;gap:12px;flex-wrap:wrap}
.article-card h3{font-size:clamp(1.2rem,2.4vw,1.55rem)}
.ac-excerpt{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;color:var(--text-caption)}
.ac-progress{height:5px;border-radius:99px;background:var(--bg-input);overflow:hidden}
.ac-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--gold-primary),var(--success));border-radius:99px;transition:width .6s}
.ac-note{font:500 .74rem var(--f-mono);color:var(--text-muted)}
.ac-btn{margin-top:auto;align-self:flex-start}
@media(min-width:641px){.article-grid{grid-template-columns:repeat(2,1fr)}}

/* ── STATISTIK ────────────────────────────────────────────────────── */
.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat{background:var(--bg-card);border:1px solid var(--border-default);border-radius:16px;padding:26px 20px;text-align:center;transition:border-color .3s,box-shadow .3s,transform .3s}
.stat:hover{border-color:var(--border-gold);box-shadow:0 12px 36px var(--gold-glow-soft);transform:translateY(-3px)}
.stat-num{font:700 clamp(1.7rem,4vw,2.6rem) var(--f-mono);color:var(--gold-light);text-shadow:0 0 26px var(--gold-glow-soft)}
.stat dd{margin-top:8px;font:500 .8rem var(--f-ui);letter-spacing:1px;text-transform:uppercase;color:var(--text-muted)}
@media(min-width:641px){.stats-grid{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1025px){.stats-grid{grid-template-columns:repeat(4,1fr);gap:24px}}

/* ── PENCAPAIAN (flip cards) ──────────────────────────────────────── */
.ach-grid{perspective:1200px}
.flip-card{height:270px;cursor:pointer;border-radius:16px}
.flip-inner{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .7s var(--ease-lux)}
.flip-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:26px;text-align:center;border:1px solid var(--border-default)}
.flip-front{background:linear-gradient(160deg,var(--bg-card),var(--bg-section-6))}
.flip-front i{font-size:2.6rem;color:var(--gold-primary);filter:drop-shadow(0 6px 16px var(--gold-glow))}
.flip-front h3{font:600 1.25rem var(--f-serif);color:var(--text-h3)}
.ach-year{font:700 .82rem var(--f-mono);color:var(--btn-text);background:linear-gradient(135deg,var(--gold-light),var(--gold-dark));padding:4px 14px;border-radius:99px}
.flip-back{background:linear-gradient(160deg,#212B49,var(--bg-card-hover));border-color:var(--gold-primary);transform:rotateY(180deg)}
.flip-back p{font-size:.9rem;color:var(--text-body);line-height:1.7}
@media(hover:hover) and (pointer:fine){.flip-card:hover .flip-inner{transform:rotateY(180deg)}}
.flip-card.flipped .flip-inner{transform:rotateY(180deg)}

/* ── FAQ (W.6) ────────────────────────────────────────────────────── */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:860px}
.faq-item{background:var(--bg-card);border:1px solid var(--border-default);border-radius:14px;overflow:hidden;transition:border-color .3s,box-shadow .3s}
.faq-item.open{border-color:var(--border-gold);box-shadow:0 10px 34px var(--gold-glow-soft)}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;padding:18px 22px;text-align:left;font:600 .97rem var(--f-ui);color:var(--text-h3);transition:color .25s}
.faq-q .fq-num{font:700 .74rem var(--f-mono);color:var(--gold-primary);min-width:26px}
.faq-q i{margin-left:auto;color:var(--gold-primary);transition:transform .4s var(--ease-lux);flex-shrink:0}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-q:hover{color:var(--gold-light)}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .4s var(--ease-lux),opacity .4s var(--ease-lux)}
.faq-item.open .faq-a{opacity:1}
.faq-a p{padding:0 22px 20px 62px;color:var(--text-caption);font-size:.92rem;line-height:1.75}

/* ── FOOTER ───────────────────────────────────────────────────────── */
.footer{background:var(--bg-nav);border-top:1px solid var(--border-gold);padding-top:clamp(48px,6vw,72px);position:relative}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:44px}
@media(min-width:641px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1025px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.f-logo img{border-radius:50%;box-shadow:0 0 24px var(--gold-glow)}
.f-name{font:700 1.3rem var(--f-display);color:var(--text-h1);letter-spacing:.3em;margin-top:14px}
.f-tag{font:italic 400 .95rem var(--f-royal);color:var(--gold-light);margin-top:6px}
.f-social{display:flex;gap:12px;margin-top:20px}
.social{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--border-default);border-radius:50%;color:var(--text-caption);transition:all .3s}
.social:hover{color:var(--btn-text);background:var(--gold-primary);border-color:var(--gold-light);transform:translateY(-3px);box-shadow:0 8px 22px var(--gold-glow-soft)}
.f-col{display:flex;flex-direction:column;gap:10px}
.f-col h4{font:600 .85rem var(--f-ui);letter-spacing:2px;text-transform:uppercase;color:var(--gold-primary);margin-bottom:8px;padding-bottom:10px;border-bottom:1px solid var(--border-default)}
.f-col a{color:var(--text-caption);font:500 .9rem var(--f-ui);width:fit-content;position:relative;transition:color .25s}
.f-col a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--gold-light);transition:width .3s var(--ease-lux)}
.f-col a:hover{color:var(--link-hover)}
.f-col a:hover::after{width:100%}
.f-creator p{color:var(--text-caption);font-size:.88rem}
.f-creator-link{display:inline-flex;align-items:center;gap:10px;margin-top:10px;padding:12px 18px;border:1px solid var(--border-gold);border-radius:12px;color:var(--gold-light)!important;font:600 .92rem var(--f-ui);background:rgba(212,175,55,.06);transition:all .3s}
.f-creator-link::after{display:none}
.f-creator-link:hover{background:var(--gold-primary);color:var(--btn-text)!important;box-shadow:0 10px 30px var(--gold-glow-soft)}
.f-creator-note{font-size:.78rem!important;color:var(--text-muted)!important;margin-top:10px}
.f-bottom{border-top:1px solid var(--border-default);padding-block:22px}
.f-bottom p{text-align:center;font:400 .86rem var(--f-ui);color:var(--text-caption)}
.f-bottom a{color:var(--gold-light);font-weight:600;position:relative}
.f-bottom a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--gold-light);transition:width .3s}
.f-bottom a:hover{color:var(--link-hover)}
.f-bottom a:hover::after{width:100%}

/* ── MODAL (Bagian Q) ─────────────────────────────────────────────── */
.modal-overlay{position:fixed;inset:0;z-index:99990;background:rgba(0,0,0,.85);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:18px;opacity:0;transition:opacity .3s}
.modal-overlay.show{opacity:1}
.modal{width:100%;max-width:820px;max-height:88vh;background:var(--bg-modal);border:1px solid var(--border-gold);border-radius:20px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 30px 90px rgba(0,0,0,.7),0 0 0 1px var(--gold-glow-soft);transform:scale(.92);transition:transform .3s var(--ease-lux)}
.modal-overlay.show .modal{transform:scale(1)}
.modal-head{display:flex;align-items:flex-start;gap:14px;padding:26px 28px 18px;border-bottom:1px solid var(--border-default);flex-shrink:0}
.modal-head-text{flex:1;min-width:0}
.modal-head h3{font:600 clamp(1.25rem,3vw,1.7rem)/1.3 var(--f-display);color:var(--text-h1);margin-bottom:10px}
.modal-head .mc-badges{margin-top:0}
.modal-close{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--border-default);border-radius:11px;color:var(--gold-primary);font-size:1.1rem;flex-shrink:0;transition:background .3s,color .3s,transform .3s}
.modal-close:hover{background:var(--bg-card);color:var(--gold-light);transform:rotate(90deg)}
.modal-body{flex:1;overflow-y:auto;padding:26px 32px;font-size:.97rem}
.modal-body > p,.modal-body > ul,.modal-body > ol{color:var(--text-body);margin-bottom:16px;line-height:1.8}
.modal-body h4{font:600 clamp(1.05rem,2.2vw,1.3rem) var(--f-serif);color:var(--gold-light);margin:26px 0 12px;padding-top:18px;border-top:1px solid var(--border-default);display:flex;align-items:center;gap:10px}
.modal-body h4:first-child{margin-top:0;padding-top:0;border-top:none}
.modal-body h4 i{color:var(--gold-primary);font-size:.95em}
.modal-body ul,.modal-body ol{padding-left:22px}
.modal-body li{margin-bottom:8px;color:var(--text-body);list-style:disc}
.modal-body ol li{list-style:decimal}
.modal-body li::marker{color:var(--gold-primary)}
.modal-body strong{color:var(--text-h3)}
.modal-body em{color:var(--gold-light)}
.modal-body pre{background:var(--bg-input);border:1px solid var(--border-default);border-left:3px solid var(--gold-primary);border-radius:10px;padding:16px 18px;margin:0 0 18px;overflow-x:auto}
.modal-body pre code{font:400 .85rem/1.7 var(--f-mono);color:var(--sapphire-light);white-space:pre}
.modal-body .m-lead{font-size:1.05rem;color:var(--text-h3);border-left:3px solid var(--gold-primary);padding-left:16px}
.modal-body .m-quote{font:italic 500 1.12rem/1.7 var(--f-serif);color:var(--gold-light);border:1px solid var(--border-gold);border-radius:14px;padding:18px 22px;margin:0 0 18px;background:rgba(212,175,55,.05)}
.modal-body .m-reflect{background:rgba(74,111,220,.08);border:1px solid rgba(74,111,220,.3);border-radius:14px;padding:18px 22px;margin-bottom:6px}
.modal-body .m-reflect ol{margin:10px 0 0}
.modal-body .m-reflect strong{color:var(--sapphire-light)}
.modal-foot{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;padding:16px 28px 24px;border-top:1px solid var(--border-default);flex-shrink:0}
.modal-body::-webkit-scrollbar{width:6px}
.modal-body::-webkit-scrollbar-thumb{background:var(--gold-dark);border-radius:4px}

/* ── ARTICLE MODAL extras ─────────────────────────────────────────── */
.modal-body .art-meta-row{display:flex;flex-wrap:wrap;gap:14px;font:500 .8rem var(--f-ui);color:var(--text-muted);margin-bottom:20px}
.modal-body .art-meta-row i{color:var(--gold-primary);margin-right:6px}

/* ── KEYFRAMES ────────────────────────────────────────────────────── */
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes spin360{to{transform:rotate(360deg)}}
@keyframes spin360rev{to{transform:rotate(-360deg)}}
@keyframes pulseGlow{0%,100%{transform:scale(1);box-shadow:0 0 30px var(--gold-glow-soft)}50%{transform:scale(1.05);box-shadow:0 0 50px var(--gold-glow)}}
@keyframes corePulse{0%,100%{opacity:.85;transform:scale(1)}50%{opacity:1;transform:scale(1.08)}}
@keyframes barSlide{0%{transform:translateX(-110%)}100%{transform:translateX(360%)}}
@keyframes dotPulse{0%,100%{opacity:.25;transform:scale(.7)}50%{opacity:1;transform:scale(1.15)}}
@keyframes shimmerText{to{background-position:200% 50%}}
@keyframes floatY{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,10px)}}
@keyframes timerBlink{50%{opacity:.45}}

/* ── RESPONSIVE GRID (P.3 — anti-overlap) ─────────────────────────── */
@media(min-width:641px){.card-grid,.calc-grid,.ach-grid{grid-template-columns:repeat(2,1fr);gap:24px}.module-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
@media(min-width:901px){.module-grid{grid-template-columns:repeat(3,1fr);gap:26px}.calc-grid{grid-template-columns:repeat(3,1fr)}.ach-grid{grid-template-columns:repeat(3,1fr);gap:24px}.reason-list{grid-template-columns:repeat(2,1fr)}.quiz-options{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1025px){.hero-inner{grid-template-columns:1.12fr .88fr;gap:40px}.card-grid{grid-template-columns:repeat(3,1fr);gap:28px}.http-split{grid-template-columns:1fr 1fr}}
@media(min-width:1281px){.module-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:28px}.calc-grid{gap:28px}.reason-list{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){
  .lux-card{padding:24px 20px}
  .modal-body{padding:22px 20px}
  .modal-head{padding:20px 20px 14px}
  .modal-foot{padding:14px 20px 20px}
  .hero{padding-top:96px}
  .hero-cta .btn{flex:1;justify-content:center}
  .brand-text{display:none}
  .brand{padding:7px}
  .reason-list li{padding-right:14px}
  .faq-a p{padding-left:22px}
}
@media(max-width:374px){
  .hero-stats{gap:18px}
  .ipk-row{grid-template-columns:1fr 64px 84px 32px}
  .section-head h2{word-break:break-word}
}

/* ── prefers-reduced-motion (T.8) ─────────────────────────────────── */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .orn-spin-slow,.orn-spin-rev,.orn-core-pulse{transform:none}
}