/* ============================================================
   Caedryn Research — /research/ pages
   Extends main.css: white ground · black ink · gold accent,
   plus a deep-navy gradient for covers and blue/gold data marks.
   Pages are print-ready (browser → Print → Save as PDF, A4).
   ============================================================ */

:root {
  --r-navy: #0e2a47;
  --r-navy-deep: #07111d;
  --r-blue: #2B5F95;
  --r-gold: #B58B3A;
  --r-gold-soft: #c2a869;
  --r-ink-2: #333a41;
}

.r-wrap { max-width: 920px; margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }

/* ---------- Cover ---------- */

.r-hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(160deg, #000 0%, var(--r-navy-deep) 45%, var(--r-navy) 100%);
  padding: 170px 0 90px;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}
.r-hero-sm { padding: 150px 0 70px; }
.r-hero-art { position: absolute; inset: 0; width: 100%; height: 100%; }
.r-hero-inner { position: relative; }
.r-hero .eyebrow { color: var(--r-gold-soft); }
.r-hero h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.18; color: #fff; }
.r-hero .r-subtitle { font-family: var(--serif); font-size: clamp(20px, 2.6vw, 28px); color: rgba(255,255,255,.86); margin-top: 16px; }
.r-hero .r-dek { font-size: 17px; line-height: 1.75; color: rgba(255,255,255,.72); max-width: 760px; margin-top: 26px; }
.r-meta { font-size: 13px; letter-spacing: .04em; color: rgba(255,255,255,.6); margin-top: 30px; padding-top: 22px; border-top: 1px solid rgba(194,168,105,.4); }
.r-meta.r-aud { border-top: 0; padding-top: 0; margin-top: 8px; }

/* ---------- Main column ---------- */

.r-main { padding-top: 0; padding-bottom: 80px; }
.r-main p, .r-main li { color: var(--r-ink-2); font-size: 16.5px; line-height: 1.85; }
.r-main p { margin-bottom: 1.15em; }
.r-main ul, .r-main ol { margin: 0 0 1.4em 1.3em; }
.r-main li { margin-bottom: .55em; }
.r-main strong { color: var(--ink); font-weight: 600; }
.r-main h2 { font-size: clamp(26px, 3vw, 34px); color: #000; margin: 0 0 22px; }
.r-main h3 { font-size: 21px; color: #000; margin: 38px 0 14px; }
.r-kicker { font-size: 12px; font-weight: 600; letter-spacing: .22em; text-transform: uppercase; color: var(--bronze); margin: 0 0 12px !important; }

.r-kpis {
  display: grid; grid-template-columns: repeat(3, 1fr);
  margin: -46px 0 70px; position: relative;
  background: #fff; box-shadow: 0 18px 50px rgba(0,0,0,.12);
  border-top: 3px solid var(--r-gold);
}
.r-kpi { padding: 26px 26px 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.r-kpi:nth-child(3n) { border-right: 0; }
.r-kpi b { display: block; font-family: var(--serif); font-weight: 600; font-size: 32px; line-height: 1.1; color: #000; }
.r-kpi span { display: block; margin-top: 8px; font-size: 13px; color: var(--grey); line-height: 1.5; }

.r-intro { margin-bottom: 60px; }

.r-outline { list-style: none; margin: 0 !important; border-top: 1px solid var(--line); }
.r-outline li { display: flex; gap: 22px; padding: 18px 0; border-bottom: 1px solid var(--line); margin: 0 !important; }
.r-ol-num { font-family: var(--serif); font-size: 22px; color: var(--r-gold); min-width: 34px; line-height: 1.3; }
.r-outline b { display: block; font-size: 17px; color: #000; font-weight: 600; }
.r-outline span:not(.r-ol-num) { display: block; font-size: 14.5px; color: var(--grey); margin-top: 3px; line-height: 1.6; }

/* ---------- Gate ---------- */

.r-gate {
  margin: 10px 0 60px; padding: 3px;
  background: linear-gradient(120deg, var(--r-gold-soft), var(--r-gold) 40%, var(--r-navy));
}
.r-gate-card { background: #fff; padding: clamp(28px, 5vw, 52px); }
.r-gate h2 { font-size: clamp(22px, 2.6vw, 28px); }
.r-gate-copy { font-size: 15.5px !important; }
.r-gate-form { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.r-gate-form input[type=email] {
  flex: 1 1 260px; padding: 15px 16px; font: inherit; font-size: 15px;
  border: 1px solid #cfcfca; background: #fff; outline: none;
}
.r-gate-form input[type=email]:focus { border-color: #000; }
.r-gate-form .btn { padding: 15px 28px; cursor: pointer; background: #000; color: #fff; font-family: var(--sans); }
.r-gate-form .btn:hover { background: var(--r-gold); border-color: var(--r-gold); }
.r-gate-form .btn[disabled] { opacity: .5; cursor: wait; }
.r-hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; opacity: 0; }
.r-gate-msg { margin-top: 16px !important; font-size: 14.5px !important; padding: 12px 16px; border-left: 3px solid var(--r-gold); background: #faf7ef; }
.r-gate-msg.err { border-left-color: #a03030; background: #fbf1f1; color: #7a1f1f !important; }
.r-gate-msg.ok { border-left-color: var(--r-blue); background: #eef3f9; }
.r-gate-privacy { font-size: 12.5px !important; color: var(--grey-light) !important; margin-top: 18px !important; margin-bottom: 0 !important; }
.r-gate-privacy a { text-decoration: underline; }

/* ---------- Report body ---------- */

.r-body:empty { display: none; }
.r-tools { display: flex; justify-content: flex-end; margin-bottom: 30px; }
.r-tools .btn { cursor: pointer; background: none; font-family: var(--sans); }
.r-sec { padding-top: 56px; margin-top: 8px; border-top: 1px solid var(--line); }
.r-findings { border-top: 3px solid #000; }
.r-findings ol { counter-reset: f; list-style: none; margin-left: 0 !important; }
.r-findings li { counter-increment: f; position: relative; padding-left: 46px; margin-bottom: 1em; }
.r-findings li::before {
  content: counter(f, decimal-leading-zero); position: absolute; left: 0; top: 0;
  font-family: var(--serif); font-size: 20px; color: var(--r-gold);
}

.r-callout {
  margin: 26px 0; padding: 20px 24px; font-size: 15.5px; line-height: 1.8; color: var(--r-ink-2);
  background: linear-gradient(90deg, #f7f3e9, #fbfaf6);
  border-left: 3px solid var(--r-gold);
  -webkit-print-color-adjust: exact; print-color-adjust: exact;
}

.r-fig { margin: 34px 0 38px; padding: 24px 24px 18px; border: 1px solid var(--line); background: #fcfcfb; break-inside: avoid; }
.r-fig figcaption { font-family: var(--serif); font-size: 17px; color: #000; margin-bottom: 12px; }
.r-chart { display: block; width: 100%; height: auto; font-family: var(--sans); }
.r-chart g:hover rect[rx] { filter: brightness(1.12); }
.r-legend { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-bottom: 12px; font-size: 13px; color: var(--grey); }
.r-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 2px; margin-right: 7px; vertical-align: -1px; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
.r-fig-note { font-size: 13px !important; color: var(--grey-light) !important; margin: 10px 0 0 !important; line-height: 1.6 !important; }

.r-table-wrap { margin: 26px 0 32px; overflow-x: auto; break-inside: avoid; }
.r-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.r-table th { text-align: left; font-size: 12px; letter-spacing: .08em; font-weight: 600; color: #fff; background: #000; padding: 11px 14px; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
.r-table td { padding: 11px 14px; border-bottom: 1px solid var(--line); color: var(--r-ink-2); vertical-align: top; }
.r-table tbody tr:nth-child(even) td { background: #fafaf8; }

.r-roles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 18px 0 10px; }
.r-role { border-top: 3px solid var(--r-navy); background: #fcfcfb; padding: 20px 20px 6px; border-left: 1px solid var(--line); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); break-inside: avoid; }
.r-role:nth-child(2) { border-top-color: var(--r-gold); }
.r-role:nth-child(3) { border-top-color: var(--r-blue); }
.r-role-name { font-family: var(--serif); font-size: 20px !important; color: #000 !important; margin: 0 !important; }
.r-role-sub { font-size: 12.5px !important; color: var(--grey-light) !important; margin: 2px 0 12px !important; }
.r-role ul { margin-left: 1.1em !important; }
.r-role li { font-size: 14.5px !important; line-height: 1.7 !important; }

/* ---------- About / disclaimer ---------- */

.r-about { padding-top: 50px; padding-bottom: 80px; border-top: 1px solid var(--line); }
.r-about p, .r-about li { font-size: 14.5px; color: var(--grey); line-height: 1.8; margin-bottom: .8em; }
.r-about ul { margin: 0 0 1em 1.2em; }
.r-about b { color: #000; font-weight: 600; }
.r-disclaimer { font-size: 12.5px !important; color: var(--grey-light) !important; margin-top: 24px; }

/* ---------- Research index ---------- */

.r-list { padding-top: 60px; }
.r-card { padding: 40px 0 46px; border-bottom: 1px solid var(--line); }
.r-card h2 a:hover { color: var(--r-gold); }
.r-card .r-subtitle { font-family: var(--serif); font-size: 20px; color: #000; margin: -10px 0 14px !important; }
.r-card .r-meta { color: var(--grey-light); border-top: 0; padding-top: 0; margin-top: 0; }
.r-card details { margin: 22px 0 28px; }
.r-card summary { cursor: pointer; font-size: 12px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; color: var(--bronze); margin-bottom: 12px; }

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  .r-kpis { grid-template-columns: repeat(2, 1fr); }
  .r-kpi:nth-child(3n) { border-right: 1px solid var(--line); }
  .r-kpi:nth-child(2n) { border-right: 0; }
  .r-kpi b { font-size: 26px; }
  .r-roles { grid-template-columns: 1fr; }
  .r-fig { padding: 16px 12px 12px; margin-left: -6px; margin-right: -6px; }
  .r-hero { padding: 170px 0 80px; }
}

/* ---------- Print / Save as PDF ---------- */

@page { size: A4; margin: 16mm 15mm 18mm; }

@media print {
  .site-header, .site-footer, .r-gate, .r-tools, .nav-toggle { display: none !important; }
  body { background: #fff; }
  .r-hero { padding: 16mm 0 14mm; margin: 0; }
  .r-hero .r-hero-inner { padding: 0 11mm; }
  .r-hero h1 { font-size: 24pt; }
  .r-hero .r-subtitle { font-size: 14pt; margin-top: 8px; }
  .r-hero .r-dek { font-size: 10pt; margin-top: 14px; }
  .r-meta { font-size: 8.5pt; margin-top: 16px; padding-top: 12px; }
  .r-kpi { padding: 14px 16px; }
  .r-kpi b { font-size: 20pt; }
  .r-kpi span { font-size: 8.5pt; margin-top: 4px; }
  .r-wrap { max-width: none; padding: 0; }
  .r-kpis { margin: 8mm 0 10mm; box-shadow: none; border: 1px solid var(--line); border-top: 3px solid var(--r-gold); }
  .r-main p, .r-main li { font-size: 10.5pt; line-height: 1.75; orphans: 3; widows: 3; }
  .r-sec { break-before: page; border-top: 0; padding-top: 0; }
  .r-intro { break-after: page; }
  .r-outline-block { break-inside: avoid; }
  .r-fig, .r-table-wrap, .r-role, .r-callout, .r-outline li { break-inside: avoid; }
  h2, h3, figcaption { break-after: avoid; }
  .r-about { break-before: page; padding: 0; border: 0; }
  a { color: inherit; }
}

/* ---------- Language (EN / 中文) ---------- */

html[data-lang="en"] .lang-zh, html[data-lang="zh"] .lang-en { display: none !important; }
html[data-lang="zh"] body.research { font-family: "PingFang SC", var(--sans); }
.r-lang {
  position: fixed; top: 96px; right: 24px; z-index: 90; display: flex;
  border: 1px solid rgba(194,168,105,.7); background: rgba(0,0,0,.55); backdrop-filter: blur(6px);
}
.r-lang button {
  font: 600 12px/1 var(--sans); letter-spacing: .12em; color: rgba(255,255,255,.75);
  background: none; border: 0; padding: 9px 13px; cursor: pointer;
}
html[data-lang="en"] .r-lang button[data-l="en"], html[data-lang="zh"] .r-lang button[data-l="zh"] { background: var(--r-gold); color: #111; }

/* ---------- Worked Q&A examples ---------- */

.r-qa { margin: 22px 0; border: 1px solid var(--line); background: #fff; break-inside: avoid; }
.r-qa.ok { border-top: 3px solid var(--r-blue); }
.r-qa.bad { border-top: 3px solid var(--r-gold); }
.r-qa-title { font-family: var(--serif); font-size: 16.5px !important; color: #000 !important; padding: 14px 18px 0; margin: 0 !important; }
.r-qa > div { padding: 12px 18px; border-bottom: 1px solid var(--line); }
.r-qa > div:last-child { border-bottom: 0; }
.r-qa > div span { display: block; font-size: 11px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--grey-light); margin-bottom: 4px; }
.r-qa > div p { margin: 0 !important; font-size: 14.5px !important; line-height: 1.75 !important; }
.r-qa-q p { color: #000 !important; }
.r-qa-next { background: #fafaf8; }
.r-qa-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 22px 0; }
.r-qa-pair .r-qa { margin: 0; }

@media (max-width: 720px) {
  .r-qa-pair { grid-template-columns: 1fr; }
  .r-lang { top: 78px; right: 12px; }
}

@media print {
  .r-lang { display: none !important; }
  .r-qa, .r-qa-pair { break-inside: avoid; }
}

/* /subscribe/ — standalone subscribe page with interest options */
.r-main.r-sub { max-width: 760px; padding-top: clamp(56px, 8vw, 100px); }
.r-sub .r-gate { margin-top: 0; }
.r-sub h1 { font-size: clamp(28px, 3.6vw, 40px); margin: 6px 0 14px; }
.r-opts { width: 100%; display: grid; gap: 10px; margin: 6px 0 8px; }
.r-opt { display: flex; gap: 14px; align-items: flex-start; border: 1px solid #ddd; padding: 16px 18px; cursor: pointer; }
.r-opt:has(input:checked) { border-color: #000; }
.r-opt input { margin-top: 4px; accent-color: #000; width: 16px; height: 16px; flex: none; }
.r-opt b { display: block; font-weight: 600; margin-bottom: 4px; }
.r-opt span { font-size: 14.5px; line-height: 1.6; color: #444; }
.r-sub-none { display: none; }

/* research index: Aedryn data centre + Insights panels */
.r-panel { margin-top: 56px; padding: clamp(28px, 4vw, 44px); border: 1px solid #e5e5e1; }
.r-panel h2 { font-size: clamp(22px, 2.6vw, 28px) !important; }
.r-panel-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.r-panel-aed { background: #000; border-color: #000; }
.r-panel-aed h2 { color: #fff !important; }
.r-main .r-panel-aed p { color: rgba(255,255,255,.72); }
.r-panel-aed .btn:first-child { background: var(--r-gold, #b58b3a); border-color: transparent; color: #000; }