/* =============================================================================
   THE FIBER ALMANAC — design system
   Aesthetic: dark "fiber-optic" tech editorial. Deep midnight canvas, electric
   mint + violet light-streaks, crisp data. Sora (display), Manrope (body),
   Space Mono (data/timestamps). Distinct from the light Almanac siblings.
   ========================================================================== */

:root {
  --bg:       #0A0F1E;
  --bg-2:     #0E1426;
  --card:     #121A2E;
  --card-2:   #16203A;
  --line:     #233052;
  --line-2:   #2E3D63;
  --ink:      #EAEFFB;
  --ink-2:    #AEBBD6;
  --ink-3:    #76849F;
  --mint:     #34F5C5;   /* primary fiber accent */
  --mint-d:   #15C79B;
  --violet:   #8B7BFF;   /* secondary glow */
  --mint-t:   rgba(52,245,197,.12);
  --amber:    #FFC24B;
  --pos:      #34F5C5;

  --display: 'Sora', system-ui, sans-serif;
  --body:    'Manrope', system-ui, -apple-system, sans-serif;
  --mono:    'Space Mono', ui-monospace, Menlo, monospace;

  --maxw: 1180px;
  --gut: clamp(18px, 4.5vw, 52px);
  --r: 12px;
  --glow: 0 0 0 1px rgba(52,245,197,.18), 0 18px 50px -18px rgba(52,245,197,.25);
  --shadow: 0 20px 50px -24px rgba(0,0,0,.7);
  --ease: cubic-bezier(.2,.7,.3,1);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} *{animation-duration:.001ms!important;transition-duration:.001ms!important} }

body {
  font-family: var(--body);
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    radial-gradient(60% 50% at 85% -5%, rgba(52,245,197,.14), transparent 60%),
    radial-gradient(50% 40% at 5% 0%, rgba(139,123,255,.12), transparent 55%);
  background-attachment: fixed;
  line-height: 1.62;
  font-size: 1.02rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--mint); text-decoration: none; }
a:hover { color: #6effd6; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
:focus-visible { outline: 2px solid var(--mint); outline-offset: 2px; }

h1,h2,h3,h4 { font-family: var(--display); font-weight: 600; line-height: 1.1; letter-spacing: -.02em; color: var(--ink); }
.mono { font-family: var(--mono); }
.kicker { font-family: var(--mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--mint); }

.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.narrow { max-width: 760px; margin-inline: auto; }
.section { padding-block: clamp(40px, 6vw, 76px); }
.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* =============================================================================
   MASTHEAD
   ========================================================================== */
.masthead-top { background: #060912; border-bottom: 1px solid var(--line); }
.masthead-top .wrap { display:flex; justify-content:space-between; align-items:center; gap:12px; padding-block:8px; font-family:var(--mono); font-size:.72rem; letter-spacing:.06em; color:var(--ink-3); }
.masthead-top .verified { display:inline-flex; align-items:center; gap:7px; color:var(--ink-2); }
.masthead-top .verified .dot { width:7px;height:7px;border-radius:50%;background:var(--mint); box-shadow:0 0 8px var(--mint); animation:pulse 2.4s infinite; }
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.masthead-top a { color:var(--mint); }

.masthead { position: sticky; top:0; z-index:50; background: color-mix(in srgb, var(--bg) 80%, transparent); backdrop-filter: blur(12px) saturate(140%); border-bottom: 1px solid var(--line); }
.masthead .bar { display:flex; align-items:center; justify-content:space-between; gap:16px; padding-block:14px; }
.brand { font-family:var(--display); font-weight:700; font-size:1.42rem; letter-spacing:-.03em; color:var(--ink); display:flex; align-items:center; gap:10px; }
.brand .ico { width:30px;height:30px;flex:none; }
.brand:hover { color:var(--ink); }
.mast-nav { display:flex; gap:22px; font-size:.92rem; font-weight:600; }
.mast-nav a { color:var(--ink-2); }
.mast-nav a:hover { color:var(--mint); }
@media (max-width: 900px){ .mast-nav { display:none; } }

.subnav { border-bottom:1px solid var(--line); background:var(--bg-2); }
.subnav .wrap { display:flex; gap:6px; overflow-x:auto; padding-block:9px; font-family:var(--mono); font-size:.74rem; letter-spacing:.03em; text-transform:uppercase; }
.subnav a { color:var(--ink-3); white-space:nowrap; padding:3px 10px; border-radius:999px; }
.subnav a:hover { color:var(--ink); background:var(--card); }

/* =============================================================================
   BUTTONS
   ========================================================================== */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:9px; font-family:var(--body); font-weight:700; font-size:1rem; padding:13px 22px; border-radius:10px; transition:transform .15s var(--ease), box-shadow .25s, background .2s; }
.btn-cta { background: linear-gradient(180deg, var(--mint), var(--mint-d)); color:#04231B; box-shadow: 0 10px 30px -8px rgba(52,245,197,.55); }
.btn-cta:hover { color:#04231B; transform: translateY(-2px); box-shadow: 0 16px 40px -8px rgba(52,245,197,.7); }
.btn-cta .arr { transition: transform .2s var(--ease); }
.btn-cta:hover .arr { transform: translateX(3px); }
.btn-sm { padding:9px 15px; font-size:.9rem; }
.btn-out { border:1.5px solid var(--line-2); color:var(--ink); background:rgba(255,255,255,.02); }
.btn-out:hover { border-color:var(--mint); color:var(--mint); }
.btn-block { width:100%; }

/* =============================================================================
   HERO
   ========================================================================== */
.hero { padding-block: clamp(34px,5vw,64px) clamp(28px,4vw,48px); position:relative; }
.hero-grid { display:grid; grid-template-columns: 1.32fr .9fr; gap: clamp(28px,4vw,56px); align-items:start; }
@media (max-width:920px){ .hero-grid { grid-template-columns:1fr; gap:32px; } }
.dateline { font-family:var(--mono); font-size:.76rem; letter-spacing:.05em; color:var(--ink-3); text-transform:uppercase; display:flex; gap:14px; flex-wrap:wrap; align-items:center; padding-bottom:14px; border-bottom:1px solid var(--line); margin-bottom:22px; }
.dateline .tag { background:var(--mint-t); color:var(--mint); padding:2px 9px; border-radius:4px; font-weight:600; border:1px solid rgba(52,245,197,.3); }
.hero h1 { font-size: clamp(2.4rem, 5.8vw, 4.1rem); letter-spacing:-.03em; }
.hero h1 em { font-style:normal; color:var(--mint); text-shadow:0 0 28px rgba(52,245,197,.45); }
.hero-stand { font-size: clamp(1.05rem,1.7vw,1.28rem); color:var(--ink-2); margin-top:20px; max-width:48ch; }
.hero-stand b { color:var(--ink); font-weight:700; }
.hero-cta-row { display:flex; flex-wrap:wrap; gap:12px; margin-top:26px; align-items:center; }
.hero-meta { margin-top:18px; font-family:var(--mono); font-size:.8rem; color:var(--ink-3); display:flex; gap:8px 18px; flex-wrap:wrap; }
.hero-meta b { color:var(--mint); }

.factpanel { background:linear-gradient(180deg,var(--card-2),var(--card)); border:1px solid var(--line-2); border-radius:16px; box-shadow:var(--glow); overflow:hidden; }
.factpanel .fp-head { background:rgba(255,255,255,.03); border-bottom:1px solid var(--line); padding:12px 18px; font-family:var(--mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; display:flex; justify-content:space-between; color:var(--ink-3); }
.factpanel .fp-head .live { color:var(--mint); }
.factpanel .fp-body { padding: 22px 20px; }
.fp-big { font-family:var(--display); font-size:3.4rem; font-weight:700; line-height:1; color:var(--ink); }
.fp-big small { font-size:.9rem; font-family:var(--mono); color:var(--ink-3); display:block; letter-spacing:.04em; text-transform:uppercase; margin-bottom:6px; }
.fp-big .u { color:var(--mint); }
.fp-split { display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line); border:1px solid var(--line); border-radius:10px; overflow:hidden; margin-top:18px; }
.fp-split div { background:var(--card); padding:14px; text-align:center; }
.fp-split .lbl { font-family:var(--mono); font-size:.66rem; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-3); }
.fp-split .num { font-family:var(--display); font-size:1.8rem; font-weight:700; color:var(--mint); }
.fp-list { margin-top:18px; display:grid; gap:10px; }
.fp-list .row { display:flex; gap:10px; font-size:.9rem; align-items:flex-start; color:var(--ink-2); }
.fp-list .row svg { width:17px;height:17px;flex:none;color:var(--mint);margin-top:3px; }
.factpanel .btn { margin: 18px 20px 20px; width: calc(100% - 40px); }

/* =============================================================================
   STAT STRIP
   ========================================================================== */
.stats { background:var(--bg-2); border-block:1px solid var(--line); }
.stats .wrap { display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); }
@media (max-width:680px){ .stats .wrap { grid-template-columns:repeat(2,1fr);} }
.stat { background:var(--bg-2); padding:22px 18px; text-align:center; }
.stat .n { font-family:var(--display); font-size:2rem; font-weight:700; color:var(--ink); }
.stat .n .u{ color:var(--mint); }
.stat .l { font-family:var(--mono); font-size:.7rem; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-3); margin-top:4px; }

/* =============================================================================
   SECTION HEADERS
   ========================================================================== */
.sechead { display:flex; align-items:baseline; justify-content:space-between; gap:16px; border-bottom:1px solid var(--line); padding-bottom:12px; margin-bottom:30px; flex-wrap:wrap; }
.sechead h2 { font-size: clamp(1.6rem,3vw,2.3rem); }
.sechead .more { font-family:var(--mono); font-size:.78rem; text-transform:uppercase; letter-spacing:.05em; }
.lead { font-size:1.12rem; color:var(--ink-2); max-width:64ch; }

/* =============================================================================
   INDEX GRIDS
   ========================================================================== */
.index-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1px; border:1px solid var(--line); border-radius:14px; overflow:hidden; background:var(--line); }
@media (max-width:820px){ .index-grid { grid-template-columns:repeat(2,1fr);} }
@media (max-width:520px){ .index-grid { grid-template-columns:1fr;} }
.index-cell { background:var(--card); padding:18px 20px; display:flex; flex-direction:column; gap:4px; transition:background .15s; }
.index-cell:hover { background:var(--card-2); }
.index-cell .t { font-family:var(--display); font-size:1.12rem; font-weight:600; color:var(--ink); display:flex; align-items:center; gap:8px; }
.index-cell .d { font-size:.86rem; color:var(--ink-3); }
.index-cell .arr { font-family:var(--mono); color:var(--mint); font-size:.8rem; margin-top:2px; }

.card-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
@media (max-width:820px){ .card-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:520px){ .card-grid{grid-template-columns:1fr;} }
.gcard { background:var(--card); border:1px solid var(--line); border-radius:14px; padding:22px; transition:transform .18s var(--ease), border-color .2s, box-shadow .25s; }
.gcard:hover { transform:translateY(-3px); border-color:var(--line-2); box-shadow:var(--shadow); }
.gcard .num { font-family:var(--mono); font-size:.74rem; color:var(--mint); letter-spacing:.06em; }
.gcard h3 { font-size:1.2rem; margin:8px 0 6px; }
.gcard p { font-size:.92rem; color:var(--ink-2); }

/* =============================================================================
   DATA TABLE
   ========================================================================== */
.dtable { width:100%; border-collapse:collapse; font-size:.95rem; background:var(--card); border:1px solid var(--line-2); border-radius:12px; overflow:hidden; }
.dtable caption { text-align:left; font-family:var(--mono); font-size:.74rem; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-3); padding:10px 2px; }
.dtable th, .dtable td { padding:13px 16px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top; color:var(--ink-2); }
.dtable thead th { font-family:var(--mono); font-size:.7rem; text-transform:uppercase; letter-spacing:.05em; background:rgba(255,255,255,.03); color:var(--ink); border-bottom:1px solid var(--line-2); }
.dtable tbody tr:last-child td { border-bottom:0; }
.dtable .feat { font-weight:600; color:var(--ink); }
.dtable .yes { color:var(--mint); font-weight:700; }
.dtable .no { color:var(--ink-3); }
.dtable .col-win { background:rgba(52,245,197,.05); }

/* =============================================================================
   ARTICLE
   ========================================================================== */
.article { max-width: 720px; margin-inline:auto; }
.article .breadcrumb { font-family:var(--mono); font-size:.74rem; letter-spacing:.03em; text-transform:uppercase; color:var(--ink-3); margin-bottom:16px; }
.article .breadcrumb a { color:var(--ink-2); }
.article h1 { font-size:clamp(2rem,4.6vw,3rem); }
.article .byline { font-family:var(--mono); font-size:.78rem; color:var(--ink-3); margin-top:16px; padding-block:14px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); display:flex; gap:8px 18px; flex-wrap:wrap; align-items:center; }
.article .byline .v { color:var(--mint); }
.article .stand { font-size:1.28rem; line-height:1.5; color:var(--ink); margin:24px 0; font-weight:500; }
.article h2 { font-size:1.6rem; margin-top:40px; }
.article h3 { font-size:1.22rem; margin-top:26px; }
.article p { margin-top:15px; color:var(--ink-2); }
.article ul { margin-top:16px; padding-left:0; list-style:none; display:grid; gap:9px; }
.article ul li { position:relative; padding-left:26px; color:var(--ink-2); }
.article ul li::before { content:''; position:absolute; left:0; top:.5em; width:13px;height:13px;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2334F5C5' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/contain no-repeat; }
.article .note { font-size:.86rem; color:var(--ink-3); margin-top:14px; padding-left:14px; border-left:2px solid var(--line-2); }

.callout { background:linear-gradient(120deg, var(--card-2), var(--card)); border:1px solid var(--line-2); border-radius:14px; padding:26px 28px; margin:32px 0; display:flex; gap:20px; align-items:center; justify-content:space-between; flex-wrap:wrap; box-shadow:var(--glow); }
.callout .ct { font-family:var(--display); font-size:1.25rem; max-width:42ch; color:var(--ink); }
.callout .ct b { color:var(--mint); }

/* =============================================================================
   CODE / SHARE
   ========================================================================== */
.codepanel { background:linear-gradient(180deg,var(--card-2),var(--card)); border:1px solid var(--line-2); border-radius:16px; padding:clamp(24px,3vw,38px); max-width:640px; margin-inline:auto; text-align:center; box-shadow:var(--glow); }
.codepanel .kicker { display:block; }
.code-line { display:flex; gap:10px; justify-content:center; align-items:center; flex-wrap:wrap; margin:18px 0; }
.code-tok { font-family:var(--mono); font-size:clamp(.95rem,2.4vw,1.2rem); font-weight:600; color:var(--mint); background:rgba(52,245,197,.07); border:1.5px dashed var(--mint-d); padding:10px 18px; border-radius:10px; word-break:break-all; }
.copy-btn { display:inline-flex; align-items:center; gap:8px; padding:12px 16px; background:var(--card); border:1px solid var(--line-2); color:var(--ink); border-radius:10px; font-weight:600; font-size:.9rem; transition:border-color .2s; }
.copy-btn:hover{ border-color:var(--mint); } .copy-btn.copied{ border-color:var(--mint); color:var(--mint); }
.share-row { display:flex; gap:10px; justify-content:center; flex-wrap:wrap; margin-top:14px; }
.share-row a { font-family:var(--mono); font-size:.8rem; color:var(--ink-2); border:1px solid var(--line); padding:8px 13px; border-radius:999px; display:inline-flex; gap:7px; align-items:center; }
.share-row a:hover{ border-color:var(--mint); color:var(--mint); }
.qr-row { margin-top:20px; display:flex; align-items:center; gap:16px; justify-content:center; }
.qr-row img { width:120px;height:120px;background:#fff;padding:6px;border-radius:10px; }
.qr-row .qt { font-family:var(--mono); font-size:.78rem; color:var(--ink-3); text-align:left; max-width:18ch; }

/* =============================================================================
   FAQ
   ========================================================================== */
.faq { display:grid; gap:0; border-top:1px solid var(--line); }
.faq details { border-bottom:1px solid var(--line); }
.faq summary { list-style:none; cursor:pointer; padding:18px 4px; display:flex; justify-content:space-between; gap:14px; font-family:var(--display); font-size:1.1rem; font-weight:600; color:var(--ink); }
.faq summary::-webkit-details-marker{ display:none; }
.faq summary .pm { font-family:var(--mono); color:var(--mint); font-size:1.3rem; transition:transform .2s; }
.faq details[open] summary .pm{ transform:rotate(45deg); }
.faq .a { padding:0 4px 20px; color:var(--ink-2); max-width:68ch; }

/* =============================================================================
   FOOTER
   ========================================================================== */
.foot { background:#060912; border-top:1px solid var(--line); color:var(--ink-3); font-size:.92rem; }
.foot-main { display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:28px; padding-block:48px; }
@media (max-width:820px){ .foot-main{ grid-template-columns:1fr 1fr; gap:26px; } }
@media (max-width:480px){ .foot-main{ grid-template-columns:1fr; } }
.foot .brand { color:var(--ink); }
.foot-disc { margin-top:14px; color:var(--ink-3); max-width:42ch; line-height:1.6; font-size:.86rem; }
.foot h4 { font-family:var(--mono); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color:var(--ink); margin-bottom:12px; }
.foot a { color:var(--ink-2); display:block; padding:4px 0; }
.foot a:hover{ color:var(--mint); }
.foot-bar { border-top:1px solid var(--line); padding-block:18px; display:flex; justify-content:space-between; gap:10px; flex-wrap:wrap; font-family:var(--mono); font-size:.74rem; color:var(--ink-3); }

.sticky-cta { position:fixed; left:0;right:0;bottom:0;z-index:80; padding:10px 14px calc(10px + env(safe-area-inset-bottom)); background:color-mix(in srgb,var(--bg) 88%,transparent); backdrop-filter:blur(10px); border-top:1px solid var(--line-2); display:none; transform:translateY(110%); transition:transform .3s var(--ease); }
.sticky-cta.show{ transform:none; }
.sticky-cta .btn{ width:100%; }
@media (max-width:760px){ .sticky-cta{display:block;} body{padding-bottom:78px;} }

.sr-only { position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0; }
.reveal { opacity:0; transform:translateY(12px); animation:rise .6s var(--ease) forwards; }
@keyframes rise { to{opacity:1;transform:none;} }
.d1{animation-delay:.05s}.d2{animation-delay:.12s}.d3{animation-delay:.19s}.d4{animation-delay:.26s}

/* search input (filter) dark variant */
.filter-input { width:100%; max-width:340px; padding:11px 14px; border:1px solid var(--line-2); border-radius:10px; font-family:var(--mono); font-size:.85rem; background:var(--card); color:var(--ink); }
.filter-input::placeholder { color:var(--ink-3); }