/* 基于 html-ppt 的 graphify-dark-graph 全 deck 模板改造。
   颜色与间距全部由本文件的 token 统一管理。 */
.tpl-viral {
  --vr-bg: #f5f8fc;
  --vr-bg-deep: #edf3f9;
  --vr-surface: rgba(255, 255, 255, .86);
  --vr-surface-strong: rgba(248, 251, 255, .97);
  --vr-line: rgba(42, 70, 101, .14);
  --vr-line-strong: rgba(42, 70, 101, .28);
  --vr-text: #15263b;
  --vr-text-soft: #53687d;
  --vr-text-dim: #7b8da0;
  --vr-blue: #347dca;
  --vr-mint: #168d80;
  --vr-warm: #c8782d;
  --vr-violet: #7368b5;
  --vr-red: #c85d6f;
  --vr-grad: linear-gradient(120deg, var(--vr-blue), var(--vr-mint) 58%, var(--vr-warm));
  --bg: var(--vr-bg);
  --bg-soft: var(--vr-bg-deep);
  --surface: var(--vr-surface);
  --surface-2: var(--vr-surface-strong);
  --border: var(--vr-line);
  --border-strong: var(--vr-line-strong);
  --text-1: var(--vr-text);
  --text-2: var(--vr-text-soft);
  --text-3: var(--vr-text-dim);
  --accent: var(--vr-mint);
  --accent-2: var(--vr-blue);
  --accent-3: var(--vr-warm);
  --good: var(--vr-mint);
  --warn: var(--vr-warm);
  --bad: var(--vr-red);
  --grad: var(--vr-grad);
  --shadow: 0 16px 42px rgba(45, 74, 106, .12);
  --shadow-lg: 0 28px 68px rgba(45, 74, 106, .18);
  background: var(--vr-bg);
  color: var(--vr-text);
}

.tpl-viral,
.tpl-viral button { font-family: var(--font-sans); }

/* 固定品牌签名：在 deck 与每一页 slide 之外，不参与翻页或页面内滚动。 */
.tpl-viral .brand-lockup {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  left: max(32px, env(safe-area-inset-left));
  z-index: 45;
  display: block;
  width: 176px;
  height: 70px;
  line-height: 0;
}
.tpl-viral .brand-logo {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: contain;
  object-position: left center;
  filter: none;
  opacity: 1;
}
.tpl-viral .deck-header { justify-content: flex-end; }

.tpl-viral .deck {
  height: 100dvh;
  background:
    linear-gradient(145deg, var(--vr-bg-deep), var(--vr-bg) 52%, var(--vr-bg-deep));
}

.tpl-viral .slide {
  padding: 72px clamp(48px, 7vw, 126px);
  color: var(--vr-text);
  background:
    linear-gradient(145deg, var(--vr-bg-deep), var(--vr-bg) 52%, var(--vr-bg-deep));
  overflow: hidden;
}

.tpl-viral .slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--vr-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--vr-line) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, transparent, black 18%, black 82%, transparent);
  opacity: .27;
  pointer-events: none;
}

.tpl-viral .slide > * { position: relative; z-index: 2; }
.tpl-viral .dense-slide { justify-content: flex-start; padding-top: 118px; }
.tpl-viral .eyebrow { margin: 0 0 12px; color: var(--vr-text-dim); }

.tpl-viral .display-title {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(42px, 4.1vw, 70px);
  line-height: 1.1;
  letter-spacing: -.05em;
  font-weight: 800;
  color: var(--vr-text);
}

.tpl-viral .display-title span,
.tpl-viral .section-title span,
.tpl-viral .hero-title span,
.tpl-viral .cta-title span {
  background: var(--vr-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tpl-viral .lede { margin: 24px 0 0; color: var(--vr-text-soft); }
.tpl-viral .slide-footnote { margin: 22px 0 0; color: var(--vr-text-dim); font-size: 14px; line-height: 1.55; }

.tpl-viral .ambient { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .28; pointer-events: none; z-index: 1; }
.tpl-viral .ambient-blue { width: 46vw; height: 46vw; left: -18vw; top: -20vw; background: var(--vr-blue); }
.tpl-viral .ambient-mint { width: 38vw; height: 38vw; right: -13vw; bottom: -20vw; background: var(--vr-mint); }
.tpl-viral .ambient-warm { width: 34vw; height: 34vw; right: -8vw; top: 2vw; background: var(--vr-warm); }

/* Slide 01 */
.tpl-viral .cover-slide { justify-content: flex-end; }
.tpl-viral .cover-slide::before { opacity: .16; }
.tpl-viral .cover-map { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; opacity: .54; pointer-events: none; }
.tpl-viral .cover-links { fill: none; stroke: var(--vr-blue); stroke-width: 1.2; stroke-opacity: .48; }
.tpl-viral .cover-nodes { fill: var(--vr-mint); }
.tpl-viral .cover-nodes circle:nth-child(3n) { fill: var(--vr-warm); }
.tpl-viral .cover-nodes circle:nth-child(4n) { fill: var(--vr-violet); }
.tpl-viral .hero-copy { max-width: 1160px; }
.tpl-viral .badge { display: inline-block; margin: 0 0 18px; padding: 6px 12px; border: 1px solid var(--vr-line-strong); border-radius: 999px; color: var(--vr-text-soft); font-size: 13px; line-height: 1.35; }
.tpl-viral .badge-warm { border-color: color-mix(in srgb, var(--vr-warm) 48%, transparent); background: color-mix(in srgb, var(--vr-warm) 12%, transparent); color: var(--vr-warm); }
.tpl-viral .hero-title { max-width: 15ch; margin: 0; font-size: clamp(55px, 7vw, 106px); line-height: .98; letter-spacing: -.07em; font-weight: 850; color: var(--vr-text); }
.tpl-viral .hero-lede { max-width: 58ch; margin: 24px 0 0; color: var(--vr-text-soft); font-size: clamp(18px, 1.55vw, 23px); line-height: 1.65; }
.tpl-viral .hero-pills { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.tpl-viral .hero-pills span { padding: 6px 12px; color: var(--vr-text-soft); border: 1px solid var(--vr-line); border-radius: 999px; background: color-mix(in srgb, var(--vr-bg-deep) 76%, transparent); font-size: 13px; }
.tpl-viral .hero-meta { position: absolute; right: clamp(28px, 4vw, 64px); bottom: 28px; color: var(--vr-text-dim); font-size: 12px; letter-spacing: .14em; }

/* Generic cards and grids */
.tpl-viral .agenda-grid,
.tpl-viral .pain-grid,
.tpl-viral .input-grid,
.tpl-viral .dimension-grid,
.tpl-viral .variant-grid,
.tpl-viral .metric-grid,
.tpl-viral .roadmap-grid { display: grid; gap: 16px; margin-top: 30px; }

.tpl-viral .agenda-grid { grid-template-columns: repeat(4, 1fr); }
.tpl-viral .agenda-card,
.tpl-viral .pain-card,
.tpl-viral .input-card,
.tpl-viral .dimension-grid article,
.tpl-viral .variant-grid article,
.tpl-viral .metric-grid article,
.tpl-viral .roadmap-grid article { padding: 22px; overflow: hidden; border: 1px solid var(--vr-line); border-radius: 18px; background: var(--vr-surface); box-shadow: var(--shadow); }
.tpl-viral .agenda-card { min-height: 222px; }
.tpl-viral .agenda-card b { display: block; margin-bottom: 18px; color: var(--vr-text-dim); font-family: var(--font-mono); font-size: 13px; }
.tpl-viral .agenda-card h3,
.tpl-viral .pain-card h3,
.tpl-viral .input-card h3,
.tpl-viral .dimension-grid h3,
.tpl-viral .variant-grid h3,
.tpl-viral .metric-grid h3,
.tpl-viral .roadmap-grid h3 { margin: 0 0 8px; font-size: 20px; color: var(--vr-text); }
.tpl-viral .agenda-card p,
.tpl-viral .pain-card p,
.tpl-viral .input-card p,
.tpl-viral .dimension-grid p,
.tpl-viral .variant-grid p,
.tpl-viral .metric-grid p,
.tpl-viral .roadmap-grid p { margin: 0; color: var(--vr-text-soft); font-size: 15px; line-height: 1.55; }
.tpl-viral .agenda-card-blue { border-top-color: var(--vr-blue); }
.tpl-viral .agenda-card-mint { border-top-color: var(--vr-mint); }
.tpl-viral .agenda-card-warm { border-top-color: var(--vr-warm); }
.tpl-viral .agenda-card-violet { border-top-color: var(--vr-violet); }

/* Slides 03–05 */
.tpl-viral .pain-grid { grid-template-columns: repeat(4, 1fr); }
.tpl-viral .pain-card { min-height: 210px; }
.tpl-viral .pain-no { display: inline-grid; place-items: center; width: 34px; height: 34px; margin-bottom: 22px; border: 1px solid var(--vr-line-strong); border-radius: 50%; color: var(--vr-blue); font: 700 12px var(--font-mono); }
.tpl-viral .split { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(320px, .96fr); align-items: center; gap: clamp(32px, 6vw, 96px); }
.tpl-viral .split-wide { align-items: stretch; }
.tpl-viral .big-quote { max-width: 37ch; margin: 30px 0 0; color: var(--vr-text-soft); font-size: clamp(22px, 2.15vw, 35px); line-height: 1.4; }
.tpl-viral .big-quote span { color: var(--vr-mint); }
.tpl-viral .definition-stack { display: grid; gap: 14px; }
.tpl-viral .definition-card { display: grid; grid-template-columns: 84px 1fr; gap: 14px; padding: 20px 22px; border: 1px solid var(--vr-line); border-radius: 16px; background: var(--vr-surface); }
.tpl-viral .definition-card span { color: var(--vr-blue); font: 700 12px var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.tpl-viral .definition-card p { margin: 0; color: var(--vr-text-soft); font-size: 16px; line-height: 1.55; }
.tpl-viral .waiting-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr; gap: 8px; align-items: center; margin-top: 30px; }
.tpl-viral .waiting-flow article { min-height: 190px; padding: 20px 17px; border: 1px solid var(--vr-line); border-radius: 16px; background: var(--vr-surface); }
.tpl-viral .waiting-flow b { display: block; margin-bottom: 18px; color: var(--vr-red); font: 700 12px var(--font-mono); }
.tpl-viral .waiting-flow span { display: block; margin-bottom: 8px; color: var(--vr-text); font-weight: 700; line-height: 1.35; }
.tpl-viral .waiting-flow p { margin: 0; color: var(--vr-text-soft); font-size: 14px; line-height: 1.5; }
.tpl-viral .waiting-flow i { color: var(--vr-text-dim); font-style: normal; font-size: 24px; }
.tpl-viral .callout { margin-top: 24px; padding: 15px 18px; border: 1px solid var(--vr-line-strong); border-radius: 14px; background: color-mix(in srgb, var(--vr-blue) 7%, var(--vr-surface)); color: var(--vr-text-soft); font-size: 16px; line-height: 1.55; }
.tpl-viral .callout strong { color: var(--vr-blue); }
.tpl-viral .callout-danger { border-color: color-mix(in srgb, var(--vr-red) 38%, transparent); background: color-mix(in srgb, var(--vr-red) 9%, var(--vr-surface)); }
.tpl-viral .callout-danger strong { color: var(--vr-red); }
.tpl-viral .callout-warm { border-color: color-mix(in srgb, var(--vr-warm) 42%, transparent); background: color-mix(in srgb, var(--vr-warm) 9%, var(--vr-surface)); }
.tpl-viral .callout-warm strong { color: var(--vr-warm); }

/* Divider */
.tpl-viral .divider-slide { justify-content: center; }
.tpl-viral .divider-slide::before { opacity: .14; }
.tpl-viral .section-number { margin: 12px 0 0; color: var(--vr-text-dim); font: 800 clamp(76px, 11vw, 168px)/.82 var(--font-mono); letter-spacing: -.1em; }
.tpl-viral .section-title { max-width: 14ch; margin: 20px 0 0; color: var(--vr-text); font-size: clamp(46px, 5vw, 84px); line-height: 1.02; letter-spacing: -.06em; }
.tpl-viral .section-lede { max-width: 62ch; margin: 22px 0 0; color: var(--vr-text-soft); font-size: clamp(17px, 1.55vw, 22px); line-height: 1.65; }

/* Slides 07–12 */
.tpl-viral .input-grid { grid-template-columns: repeat(4, 1fr); }
.tpl-viral .input-card { min-height: 220px; }
.tpl-viral .input-icon { display: grid; place-items: center; width: 40px; height: 40px; margin-bottom: 26px; border-radius: 12px; background: color-mix(in srgb, var(--vr-blue) 15%, transparent); color: var(--vr-blue); font: 700 12px var(--font-mono); }
.tpl-viral .dimension-grid { grid-template-columns: repeat(3, 1fr); }
.tpl-viral .dimension-grid article { min-height: 166px; }
.tpl-viral .dimension-icon { display: block; margin-bottom: 12px; color: var(--vr-mint); font-size: 25px; line-height: 1; }
.tpl-viral .dimension-table-wrap { margin-top: 28px; border: 1px solid var(--vr-line); border-radius: 18px; overflow: hidden; background: var(--vr-surface); }
.tpl-viral .dimension-table { width: 100%; border-collapse: collapse; table-layout: fixed; }
.tpl-viral .dimension-table th { padding: 15px 20px; color: var(--vr-text-dim); background: color-mix(in srgb, var(--vr-bg-deep) 55%, transparent); text-align: left; font-size: 12px; font-weight: 600; letter-spacing: .1em; }
.tpl-viral .dimension-table td { padding: 16px 20px; border-top: 1px solid var(--vr-line); color: var(--vr-text-soft); font-size: 15px; line-height: 1.45; vertical-align: top; }
.tpl-viral .dimension-table td:first-child { width: 18%; color: var(--vr-text); font-weight: 700; }
.tpl-viral .do-dont { display: grid; gap: 16px; }
.tpl-viral .do-card,
.tpl-viral .dont-card { padding: 22px; border: 1px solid var(--vr-line); border-radius: 18px; background: var(--vr-surface); }
.tpl-viral .do-card { border-color: color-mix(in srgb, var(--vr-mint) 42%, transparent); }
.tpl-viral .dont-card { border-color: color-mix(in srgb, var(--vr-red) 42%, transparent); }
.tpl-viral .do-card b,
.tpl-viral .dont-card b { font-size: 18px; }
.tpl-viral .do-card b { color: var(--vr-mint); }
.tpl-viral .dont-card b { color: var(--vr-red); }
.tpl-viral .do-dont ul { display: grid; gap: 10px; margin: 14px 0 0; padding: 0; list-style: none; color: var(--vr-text-soft); font-size: 15px; line-height: 1.45; }
.tpl-viral .do-dont li { padding-left: 20px; position: relative; }
.tpl-viral .do-card li::before,
.tpl-viral .dont-card li::before { position: absolute; left: 0; font-weight: 800; }
.tpl-viral .do-card li::before { content: "✓"; color: var(--vr-mint); }
.tpl-viral .dont-card li::before { content: "×"; color: var(--vr-red); }
.tpl-viral .fusion-layout { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 14px; align-items: center; margin-top: 32px; }
.tpl-viral .fusion-source,
.tpl-viral .fusion-result { min-height: 260px; padding: 24px; border: 1px solid var(--vr-line); border-radius: 20px; background: var(--vr-surface); }
.tpl-viral .fusion-product { border-color: color-mix(in srgb, var(--vr-mint) 42%, transparent); }
.tpl-viral .fusion-result { border-color: color-mix(in srgb, var(--vr-warm) 42%, transparent); background: color-mix(in srgb, var(--vr-warm) 7%, var(--vr-surface)); }
.tpl-viral .fusion-source small,
.tpl-viral .fusion-result small { display: block; margin-bottom: 22px; color: var(--vr-text-dim); font: 700 11px var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.tpl-viral .fusion-source h3,
.tpl-viral .fusion-result h3 { margin: 0; color: var(--vr-text); font-size: 24px; line-height: 1.25; }
.tpl-viral .fusion-source p,
.tpl-viral .fusion-result p { margin: 16px 0 0; color: var(--vr-text-soft); font-size: 15px; line-height: 1.55; }
.tpl-viral .fusion-arrow { color: var(--vr-text-dim); font-size: 30px; }
.tpl-viral .variant-grid { grid-template-columns: repeat(4, 1fr); }
.tpl-viral .variant-grid article { min-height: 180px; }
.tpl-viral .variant-label { margin: 0 0 18px !important; color: var(--vr-violet) !important; font: 700 11px var(--font-mono); letter-spacing: .08em; }

/* Slides 14–18 */
.tpl-viral .pipeline { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr; gap: 8px; align-items: stretch; margin-top: 30px; }
.tpl-viral .pipeline article { min-height: 200px; padding: 20px 16px; border: 1px solid var(--vr-line); border-radius: 16px; background: var(--vr-surface); }
.tpl-viral .pipeline article:nth-of-type(2) { border-color: color-mix(in srgb, var(--vr-blue) 42%, transparent); }
.tpl-viral .pipeline article:nth-of-type(3) { border-color: color-mix(in srgb, var(--vr-warm) 42%, transparent); }
.tpl-viral .pipeline article:nth-of-type(4) { border-color: color-mix(in srgb, var(--vr-mint) 42%, transparent); }
.tpl-viral .pipeline article:nth-of-type(5) { border-color: color-mix(in srgb, var(--vr-violet) 42%, transparent); }
.tpl-viral .pipeline article span { display: block; margin-bottom: 18px; color: var(--vr-text-dim); font: 700 12px var(--font-mono); }
.tpl-viral .pipeline h3 { margin: 0 0 10px; color: var(--vr-text); font-size: 18px; }
.tpl-viral .pipeline p { margin: 0; color: var(--vr-text-soft); font-size: 14px; line-height: 1.5; }
.tpl-viral .pipeline i { align-self: center; color: var(--vr-text-dim); font-style: normal; font-size: 22px; }
.tpl-viral .responsibility-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 28px; }
.tpl-viral .agent-side,
.tpl-viral .human-side { padding: 28px; border: 1px solid var(--vr-line); border-radius: 20px; background: var(--vr-surface); }
.tpl-viral .agent-side { border-color: color-mix(in srgb, var(--vr-blue) 45%, transparent); }
.tpl-viral .human-side { border-color: color-mix(in srgb, var(--vr-warm) 45%, transparent); }
.tpl-viral .responsibility-label { margin: 0 0 20px; font: 700 13px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
.tpl-viral .agent-side .responsibility-label { color: var(--vr-blue); }
.tpl-viral .human-side .responsibility-label { color: var(--vr-warm); }
.tpl-viral .responsibility-grid ul { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.tpl-viral .responsibility-grid li { position: relative; padding-left: 24px; color: var(--vr-text-soft); font-size: 16px; line-height: 1.5; }
.tpl-viral .responsibility-grid li::before { position: absolute; left: 0; content: "→"; color: var(--vr-mint); font-weight: 800; }
.tpl-viral .split-media { grid-template-columns: minmax(0, 1fr) minmax(360px, .9fr); }
.tpl-viral .number-list { display: grid; gap: 12px; margin: 26px 0 0; padding: 0; list-style: none; counter-reset: item; }
.tpl-viral .number-list li { position: relative; padding-left: 44px; color: var(--vr-text-soft); font-size: 16px; line-height: 1.55; counter-increment: item; }
.tpl-viral .number-list li::before { content: counter(item); position: absolute; left: 0; display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--vr-line-strong); border-radius: 50%; color: var(--vr-blue); font: 700 11px var(--font-mono); }
.tpl-viral .workflow-figure { margin: 0; border: 1px solid var(--vr-line); border-radius: 18px; overflow: hidden; background: var(--vr-bg-deep); box-shadow: var(--shadow-lg); }
.tpl-viral .workflow-figure img { width: 100%; max-width: 100%; height: auto; object-fit: contain; }
.tpl-viral .workflow-figure figcaption { padding: 10px 14px; color: var(--vr-text-dim); font-size: 12px; }
.tpl-viral .metric-grid { grid-template-columns: repeat(3, 1fr); }
.tpl-viral .metric-grid article { min-height: 205px; }
.tpl-viral .metric { margin: 0 0 14px !important; color: var(--vr-text) !important; font-size: clamp(44px, 5vw, 74px) !important; font-weight: 850; line-height: 1 !important; letter-spacing: -.07em; }
.tpl-viral .metric span { color: var(--vr-mint); }
.tpl-viral .record-layout { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr); gap: 24px; align-items: center; margin-top: 30px; }
.tpl-viral .record-board { overflow: hidden; border: 1px solid var(--vr-line); border-radius: 18px; background: var(--vr-surface); }
.tpl-viral .record-head { display: flex; justify-content: space-between; padding: 16px 18px; color: var(--vr-text); border-bottom: 1px solid var(--vr-line); font-weight: 700; }
.tpl-viral .record-head span:last-child { color: var(--vr-mint); font: 700 11px var(--font-mono); letter-spacing: .1em; }
.tpl-viral .record-row { display: grid; grid-template-columns: 1.12fr .75fr 1.28fr .78fr .82fr .75fr; gap: 8px; padding: 14px 18px; border-bottom: 1px solid var(--vr-line); color: var(--vr-text-soft); font-size: 13px; }
.tpl-viral .record-row:last-child { border-bottom: 0; }
.tpl-viral .row-label { color: var(--vr-text-dim); background: color-mix(in srgb, var(--vr-bg-deep) 54%, transparent); font-size: 11px; }
.tpl-viral .status { display: inline-flex; align-items: center; width: max-content; padding: 2px 7px; border: 1px solid; border-radius: 999px; font-size: 11px; line-height: 1.4; }
.tpl-viral .status-ok { color: var(--vr-mint); border-color: color-mix(in srgb, var(--vr-mint) 40%, transparent); }
.tpl-viral .status-run { color: var(--vr-blue); border-color: color-mix(in srgb, var(--vr-blue) 40%, transparent); }
.tpl-viral .status-stop { color: var(--vr-red); border-color: color-mix(in srgb, var(--vr-red) 40%, transparent); }
.tpl-viral .record-notes { display: grid; gap: 12px; }
.tpl-viral .record-notes article { padding: 16px; border-left: 2px solid var(--vr-mint); background: color-mix(in srgb, var(--vr-mint) 6%, var(--vr-surface)); }
.tpl-viral .record-notes h3 { margin: 0 0 6px; color: var(--vr-text); font-size: 16px; }
.tpl-viral .record-notes p { margin: 0; color: var(--vr-text-soft); font-size: 14px; line-height: 1.5; }

/* Slides 20–25 */
.tpl-viral .comparison-table { margin-top: 30px; overflow: hidden; border: 1px solid var(--vr-line); border-radius: 18px; background: var(--vr-surface); }
.tpl-viral .comparison-table > div { display: grid; grid-template-columns: .72fr 1.05fr 1.25fr; gap: 18px; padding: 15px 20px; border-bottom: 1px solid var(--vr-line); color: var(--vr-text-soft); font-size: 15px; line-height: 1.45; }
.tpl-viral .comparison-table > div:last-child { border-bottom: 0; }
.tpl-viral .comparison-table .compare-head { color: var(--vr-text-dim); background: color-mix(in srgb, var(--vr-bg-deep) 54%, transparent); font-size: 12px; letter-spacing: .06em; }
.tpl-viral .comparison-table b { color: var(--vr-text); }
.tpl-viral .comparison-table span:last-child { color: var(--vr-mint); }
.tpl-viral .testing-board { display: grid; gap: 18px; margin-top: 28px; }
.tpl-viral .test-axis,
.tpl-viral .test-result { display: flex; align-items: center; gap: 14px; padding: 16px 20px; border: 1px solid var(--vr-line); border-radius: 14px; background: var(--vr-surface); }
.tpl-viral .test-axis span,
.tpl-viral .test-result span { flex: 0 0 auto; color: var(--vr-text-dim); font: 700 11px var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.tpl-viral .test-axis strong { color: var(--vr-text); font-size: 16px; }
.tpl-viral .test-variants { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.tpl-viral .test-variants article { min-height: 160px; padding: 19px; border: 1px solid var(--vr-line); border-radius: 17px; background: var(--vr-surface); }
.tpl-viral .test-variants b { color: var(--vr-violet); font: 700 11px var(--font-mono); }
.tpl-viral .test-variants h3 { margin: 16px 0 8px; color: var(--vr-text); font-size: 18px; }
.tpl-viral .test-variants p,
.tpl-viral .test-result p { margin: 0; color: var(--vr-text-soft); font-size: 14px; line-height: 1.5; }
.tpl-viral .test-result { border-color: color-mix(in srgb, var(--vr-mint) 42%, transparent); background: color-mix(in srgb, var(--vr-mint) 7%, var(--vr-surface)); }
.tpl-viral .feedback-loop { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: center; gap: 10px; margin-top: 30px; }
.tpl-viral .loop-item { min-height: 190px; padding: 20px; border: 1px solid var(--vr-line); border-radius: 18px; background: var(--vr-surface); }
.tpl-viral .loop-item b { display: block; margin-bottom: 18px; color: var(--vr-text-dim); font: 700 12px var(--font-mono); }
.tpl-viral .loop-item span { display: block; margin-bottom: 7px; color: var(--vr-text); font-size: 19px; font-weight: 700; }
.tpl-viral .loop-item p { margin: 0; color: var(--vr-text-soft); font-size: 14px; line-height: 1.5; }
.tpl-viral .loop-a { border-color: color-mix(in srgb, var(--vr-blue) 42%, transparent); }
.tpl-viral .loop-b { border-color: color-mix(in srgb, var(--vr-mint) 42%, transparent); }
.tpl-viral .loop-c { border-color: color-mix(in srgb, var(--vr-warm) 42%, transparent); }
.tpl-viral .loop-d { border-color: color-mix(in srgb, var(--vr-violet) 42%, transparent); }
.tpl-viral .loop-arrow { color: var(--vr-text-dim); font-size: 24px; }
.tpl-viral .feedback-quote { max-width: 64ch; margin: 30px auto 0; color: var(--vr-text); font-size: clamp(20px, 2vw, 30px); font-weight: 650; line-height: 1.4; text-align: center; }
.tpl-viral .roadmap-grid { grid-template-columns: repeat(5, 1fr); }
.tpl-viral .roadmap-grid article { min-height: 210px; }
.tpl-viral .roadmap-grid b { display: block; margin-bottom: 24px; color: var(--vr-blue); font: 700 12px var(--font-mono); }
.tpl-viral .fit-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 28px; }
.tpl-viral .fit-card,
.tpl-viral .unfit-card { padding: 28px; border: 1px solid var(--vr-line); border-radius: 20px; background: var(--vr-surface); }
.tpl-viral .fit-card { border-color: color-mix(in srgb, var(--vr-mint) 46%, transparent); }
.tpl-viral .unfit-card { border-color: color-mix(in srgb, var(--vr-red) 46%, transparent); }
.tpl-viral .fit-card h3,
.tpl-viral .unfit-card h3 { margin: 0 0 18px; font-size: 24px; }
.tpl-viral .fit-card h3 { color: var(--vr-mint); }
.tpl-viral .unfit-card h3 { color: var(--vr-red); }
.tpl-viral .fit-grid ul { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.tpl-viral .fit-grid li { position: relative; padding-left: 23px; color: var(--vr-text-soft); font-size: 16px; line-height: 1.5; }
.tpl-viral .fit-grid li::before { position: absolute; left: 0; font-weight: 800; }
.tpl-viral .fit-card li::before { content: "✓"; color: var(--vr-mint); }
.tpl-viral .unfit-card li::before { content: "×"; color: var(--vr-red); }
.tpl-viral .cta-slide { justify-content: center; text-align: center; }
.tpl-viral .cta-title { max-width: 15ch; margin: 0 auto; color: var(--vr-text); font-size: clamp(50px, 6vw, 96px); line-height: 1.02; letter-spacing: -.06em; }
.tpl-viral .cta-lede { max-width: 54ch; margin: 24px auto 0; color: var(--vr-text-soft); font-size: 19px; line-height: 1.65; }
.tpl-viral .cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.tpl-viral .cta-button,
.tpl-viral .cta-secondary { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 19px; border: 1px solid var(--vr-line-strong); border-radius: 12px; font-size: 16px; font-weight: 700; text-decoration: none; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.tpl-viral .cta-button { gap: 10px; background: var(--vr-mint); border-color: var(--vr-mint); color: var(--vr-bg-deep); }
.tpl-viral .cta-secondary { color: var(--vr-text); background: color-mix(in srgb, var(--vr-bg-deep) 54%, transparent); }
.tpl-viral .cta-button:hover,
.tpl-viral .cta-secondary:hover { transform: translateY(-2px); text-decoration: none; }
.tpl-viral .cta-secondary:hover { border-color: var(--vr-blue); }
.tpl-viral .pricing-note { max-width: 82ch; margin: 20px auto 0; color: var(--vr-text-dim); font-size: 12px; line-height: 1.6; }

/* Fixed, touch-safe navigation */
.tpl-viral .slide-controls { position: fixed; right: max(18px, env(safe-area-inset-right)); bottom: max(18px, env(safe-area-inset-bottom)); z-index: 30; display: flex; align-items: center; gap: 8px; padding: 7px; border: 1px solid var(--vr-line); border-radius: 999px; background: color-mix(in srgb, var(--vr-bg-deep) 82%, transparent); backdrop-filter: blur(16px); box-shadow: var(--shadow); }
.tpl-viral .slide-control { display: grid; place-items: center; min-width: 44px; min-height: 44px; padding: 0; border: 1px solid var(--vr-line); border-radius: 50%; background: var(--vr-surface); color: var(--vr-text); font-size: 22px; line-height: 1; cursor: pointer; }
.tpl-viral .slide-control:hover:not(:disabled) { border-color: var(--vr-mint); color: var(--vr-mint); }
.tpl-viral .slide-control:focus-visible,
.tpl-viral .cta-button:focus-visible,
.tpl-viral .cta-secondary:focus-visible { outline: 3px solid color-mix(in srgb, var(--vr-blue) 65%, transparent); outline-offset: 3px; }
.tpl-viral .slide-control:disabled { cursor: not-allowed; opacity: .35; }
.tpl-viral .slide-counter { min-width: 44px; color: var(--vr-text-soft); font: 700 11px var(--font-mono); text-align: center; white-space: nowrap; }
.tpl-viral .progress-bar > span { background: var(--vr-mint); }

/* Mobile presentation guardrails: every slide can scroll; content never hides under controls. */
@media (max-width: 900px) {
  .tpl-viral .brand-lockup {
    top: max(10px, env(safe-area-inset-top));
    left: max(24px, env(safe-area-inset-left));
    width: 144px;
    height: 58px;
  }
  .tpl-viral .slide { padding: 68px 24px 96px; justify-content: flex-start; overflow-x: clip; overflow-y: auto; overscroll-behavior: contain; }
  .tpl-viral .cover-slide,
  .tpl-viral .divider-slide,
  .tpl-viral .cta-slide { justify-content: center; }
  .tpl-viral .dense-slide { padding-top: 68px; }
  .tpl-viral .display-title { font-size: clamp(37px, 9vw, 62px); }
  .tpl-viral .agenda-grid,
  .tpl-viral .pain-grid,
  .tpl-viral .input-grid,
  .tpl-viral .variant-grid { grid-template-columns: repeat(2, 1fr); }
  .tpl-viral .agenda-card,
  .tpl-viral .pain-card,
  .tpl-viral .input-card,
  .tpl-viral .variant-grid article { min-height: 0; }
  .tpl-viral .dimension-grid { grid-template-columns: repeat(2, 1fr); }
  .tpl-viral .waiting-flow,
  .tpl-viral .pipeline { grid-template-columns: repeat(3, 1fr); }
  .tpl-viral .waiting-flow i,
  .tpl-viral .pipeline i { display: none; }
  .tpl-viral .waiting-flow article,
  .tpl-viral .pipeline article { min-height: 150px; }
  .tpl-viral .fusion-layout { grid-template-columns: 1fr; }
  .tpl-viral .fusion-arrow { display: none; }
  .tpl-viral .fusion-source,
  .tpl-viral .fusion-result { min-height: 0; }
  .tpl-viral .roadmap-grid { grid-template-columns: repeat(3, 1fr); }
  .tpl-viral .feedback-loop { grid-template-columns: repeat(2, 1fr); }
  .tpl-viral .loop-arrow { display: none; }
  .tpl-viral .record-layout { grid-template-columns: 1fr; }
  /* 让内部滚动区从固定 Logo 下方开始，文字不会从 Logo 背后滑过。 */
  .tpl-viral .deck > .slide,
  .tpl-viral .deck > .dense-slide {
    top: 84px;
    min-height: 0;
    padding-top: 18px;
  }
}

@media (max-width: 600px) {
  html, body, .tpl-viral .deck { max-width: 100%; overflow-x: hidden; }
  .tpl-viral { font-size: 15px; }
  .tpl-viral .desktop-only { display: none !important; }
  .tpl-viral .brand-lockup {
    top: max(8px, env(safe-area-inset-top));
    left: max(16px, env(safe-area-inset-left));
    width: 106px;
    height: 43px;
  }
  .tpl-viral .slide { min-height: 100dvh; padding: 70px 16px calc(104px + env(safe-area-inset-bottom)); }
  .tpl-viral .dense-slide { padding-top: 70px; }
  .tpl-viral .slide > :is(h1, h2, h3, p, span, li, a, td, th) { overflow-wrap: anywhere; }
  .tpl-viral .cover-slide { padding-top: 92px; }
  .tpl-viral .deck > .slide,
  .tpl-viral .deck > .dense-slide {
    top: 62px;
    min-height: 0;
    padding-top: 14px;
  }
  .tpl-viral .deck > .cover-slide { padding-top: 24px; }
  .tpl-viral .hero-title { width: 100%; max-width: 100%; font-size: clamp(36px, 11vw, 44px); overflow-wrap: anywhere; word-break: break-all; }
  .tpl-viral .hero-lede { font-size: 17px; }
  .tpl-viral .hero-meta { right: 16px; bottom: 90px; }
  .tpl-viral .display-title { width: 100%; max-width: 100%; font-size: clamp(30px, 10vw, 42px); overflow-wrap: anywhere; word-break: break-all; }
  .tpl-viral .display-title span,
  .tpl-viral .section-title span,
  .tpl-viral .hero-title span,
  .tpl-viral .cta-title span {
    display: block;
    width: 100%;
    max-width: 100%;
    background: none;
    -webkit-text-fill-color: var(--vr-mint);
    color: var(--vr-mint);
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-all;
  }
  .tpl-viral .agenda-grid,
  .tpl-viral .pain-grid,
  .tpl-viral .input-grid,
  .tpl-viral .dimension-grid,
  .tpl-viral .variant-grid,
  .tpl-viral .metric-grid,
  .tpl-viral .roadmap-grid,
  .tpl-viral .test-variants,
  .tpl-viral .fit-grid,
  .tpl-viral .responsibility-grid { grid-template-columns: 1fr; }
  .tpl-viral .agenda-card,
  .tpl-viral .pain-card,
  .tpl-viral .input-card,
  .tpl-viral .dimension-grid article,
  .tpl-viral .variant-grid article,
  .tpl-viral .metric-grid article,
  .tpl-viral .roadmap-grid article { min-height: 0; padding: 18px; }
  .tpl-viral .agenda-grid,
  .tpl-viral .pain-grid,
  .tpl-viral .input-grid,
  .tpl-viral .dimension-grid,
  .tpl-viral .variant-grid,
  .tpl-viral .metric-grid,
  .tpl-viral .roadmap-grid { gap: 12px; margin-top: 20px; }
  .tpl-viral .split,
  .tpl-viral .split-media { grid-template-columns: 1fr; gap: 24px; }
  .tpl-viral .big-quote { margin-top: 20px; font-size: 22px; }
  .tpl-viral .definition-card { grid-template-columns: 1fr; gap: 6px; }
  .tpl-viral .waiting-flow,
  .tpl-viral .pipeline { grid-template-columns: 1fr; margin-top: 20px; }
  .tpl-viral .waiting-flow article,
  .tpl-viral .pipeline article { min-height: 0; padding: 16px; }
  .tpl-viral .waiting-flow b,
  .tpl-viral .pipeline article span { margin-bottom: 9px; }
  .tpl-viral .section-number { font-size: 86px; }
  .tpl-viral .section-title { width: 100%; max-width: 100%; font-size: clamp(37px, 11vw, 48px); overflow-wrap: anywhere; word-break: break-all; }
  .tpl-viral .dimension-table-wrap { margin-top: 20px; overflow: visible; border: 0; background: transparent; }
  .tpl-viral .dimension-table,
  .tpl-viral .dimension-table tbody,
  .tpl-viral .dimension-table tr,
  .tpl-viral .dimension-table td { display: block; width: 100%; }
  .tpl-viral .dimension-table thead { display: none; }
  .tpl-viral .dimension-table tr { margin-bottom: 10px; padding: 12px 14px; border: 1px solid var(--vr-line); border-radius: 14px; background: var(--vr-surface); }
  .tpl-viral .dimension-table td { padding: 5px 0; border: 0; font-size: 15px; }
  .tpl-viral .dimension-table td::before { display: block; margin-bottom: 2px; color: var(--vr-text-dim); font: 700 10px var(--font-mono); letter-spacing: .07em; }
  .tpl-viral .dimension-table td:nth-child(1)::before { content: "拆解维度"; }
  .tpl-viral .dimension-table td:nth-child(2)::before { content: "系统识别什么"; }
  .tpl-viral .dimension-table td:nth-child(3)::before { content: "生成时怎样用"; }
  .tpl-viral .fusion-layout { margin-top: 20px; }
  .tpl-viral .do-dont { gap: 10px; }
  .tpl-viral .responsibility-grid { margin-top: 20px; gap: 12px; }
  .tpl-viral .agent-side,
  .tpl-viral .human-side { padding: 20px; }
  .tpl-viral .workflow-figure { max-width: 100%; }
  .tpl-viral .metric { font-size: 52px !important; }
  .tpl-viral .record-board { overflow: visible; border: 0; background: transparent; }
  .tpl-viral .record-head,
  .tpl-viral .row-label { display: none; }
  .tpl-viral .record-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; margin-bottom: 10px; padding: 14px; border: 1px solid var(--vr-line); border-radius: 14px; background: var(--vr-surface); font-size: 13px; }
  .tpl-viral .record-row span { overflow-wrap: anywhere; }
  .tpl-viral .record-row span::before { display: block; color: var(--vr-text-dim); font: 700 9px var(--font-mono); letter-spacing: .06em; }
  .tpl-viral .record-row span:nth-child(1)::before { content: "参考"; }
  .tpl-viral .record-row span:nth-child(2)::before { content: "产品"; }
  .tpl-viral .record-row span:nth-child(3)::before { content: "脚本版本"; }
  .tpl-viral .record-row span:nth-child(4)::before { content: "审核"; }
  .tpl-viral .record-row span:nth-child(5)::before { content: "成片"; }
  .tpl-viral .record-row span:nth-child(6)::before { content: "结果"; }
  .tpl-viral .comparison-table { margin-top: 20px; border: 0; background: transparent; }
  .tpl-viral .comparison-table .compare-head { display: none; }
  .tpl-viral .comparison-table > div { display: block; margin-bottom: 10px; padding: 14px; border: 1px solid var(--vr-line); border-radius: 14px; background: var(--vr-surface); font-size: 14px; }
  .tpl-viral .comparison-table > div > * { display: block; margin-top: 8px; }
  .tpl-viral .comparison-table > div > *:first-child { margin-top: 0; }
  .tpl-viral .comparison-table span::before { display: block; color: var(--vr-text-dim); font: 700 9px var(--font-mono); letter-spacing: .06em; }
  .tpl-viral .comparison-table span:nth-child(2)::before { content: "自动化前"; }
  .tpl-viral .comparison-table span:nth-child(3)::before { content: "自动化后"; }
  .tpl-viral .testing-board { margin-top: 20px; }
  .tpl-viral .test-axis,
  .tpl-viral .test-result { align-items: flex-start; flex-direction: column; gap: 7px; }
  .tpl-viral .feedback-loop { grid-template-columns: 1fr; margin-top: 20px; }
  .tpl-viral .loop-item { min-height: 0; padding: 17px; }
  .tpl-viral .feedback-quote { margin-top: 22px; font-size: 22px; }
  .tpl-viral .fit-card,
  .tpl-viral .unfit-card { padding: 20px; }
  .tpl-viral .cta-title { width: 100%; max-width: 100%; font-size: clamp(36px, 11vw, 46px); overflow-wrap: anywhere; word-break: break-all; }
  .tpl-viral .cta-lede { font-size: 16px; }
  .tpl-viral .cta-actions { align-items: stretch; flex-direction: column; margin-top: 24px; }
  .tpl-viral .cta-button,
  .tpl-viral .cta-secondary { width: 100%; min-height: 48px; padding: 12px 14px; }
  .tpl-viral .slide-controls { right: 50%; bottom: max(14px, env(safe-area-inset-bottom)); transform: translateX(50%); }
}