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/* Sounding station: glacial floe paper, rift-abyss panels, instrument ticks.
   Amber marks the reader's live position; cold steel carries links and
   citations; signal red is reserved for disputed figures and their tags. */
:root{
  color-scheme:light;
  --floe:#e9eff1;--panel:#f5f9fa;--ink:#0c1a21;--muted:#46616d;
  --steel:#2f5d6d;--steel-deep:#1e4250;
  --abyss:#0a1419;--abyss-2:#102129;
  --signal:#e0a33c;--signal-deep:#8a5f14;--signal-pale:#eec687;
  --alarm:#b3372a;--alarm-bright:#d6543f;
  --sand:#e3cf9e;
  --line:#a9bfc8;--line-soft:#cfdde3;--line-strong:#5d7a86;
  --stage-ink:#f0f5f6;--stage-muted:#93a9b2;
  --chapter-wash:#dde7ec;--stage-fill:#0b1b24;
  --display:Syne,"PingFang SC","Hiragino Sans GB","Noto Sans CJK SC",sans-serif;
  --text:Newsreader,Georgia,"Noto Serif CJK SC",serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --cjk:"PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  --rail-gutter:88px;
  --shadow:0 22px 55px #0c1a2126;
  --ticks:repeating-linear-gradient(90deg,var(--line-strong) 0 2px,transparent 2px 14px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:6rem;background:var(--floe);color:var(--ink);font-family:var(--text);font-size:18px;font-optical-sizing:auto}
html[lang="ro"]{quotes:"„" "“" "«" "»"}
html[lang="en"]{quotes:"“" "”" "‘" "’"}
html[lang="zh-Hans"]{quotes:"“" "”" "‘" "’"}
body{margin:0;min-width:320px;line-height:1.6;background:var(--floe);overflow-x:hidden}
::selection{background:var(--signal);color:#14100a}
a{color:var(--steel-deep);text-underline-offset:.2em}
a:hover{color:var(--signal-deep)}
button{font:inherit;color:inherit}
button,a{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid var(--signal-deep);outline-offset:4px;border-radius:2px}
.skip-link{position:fixed;left:-100vw;top:1rem;z-index:100;background:var(--ink);color:var(--floe);padding:.7rem 1rem;font-family:var(--mono);font-size:.85rem}
.skip-link:focus{left:1rem}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.shell{width:min(1240px,calc(100% - 2*clamp(1.5rem,4vw,4rem) - var(--rail-gutter)));margin-inline:auto}
main{counter-reset:chapter}
.site-header.shell{position:sticky;top:0;z-index:20;width:100%;margin:0;min-height:62px;
  display:grid;grid-template-columns:max-content minmax(0,1fr) max-content;align-items:center;gap:1.3rem;
  padding:0 clamp(1rem,3.5vw,3.8rem);padding-right:calc(clamp(1rem,3.5vw,3.8rem) + var(--rail-gutter));
  border-bottom:1px solid var(--line);background:#e9eff1ec;backdrop-filter:blur(14px)}
.wordmark{max-width:22rem;color:var(--ink);font-family:var(--display);font-size:.82rem;font-weight:700;letter-spacing:.02em;line-height:1.2;text-decoration:none}
.top-jumps{display:flex;align-items:center;justify-content:center;gap:clamp(.65rem,1.7vw,1.5rem);min-width:0}
.top-jumps a,.language-switch a{color:var(--muted);font-family:var(--mono);font-size:.76rem;text-decoration:none;white-space:nowrap}
.top-jumps a{padding:.35rem 0;border-bottom:2px solid transparent}
.top-jumps a:hover,.top-jumps a[aria-current="location"]{color:var(--ink);border-color:var(--signal-deep)}
.header-actions{display:flex;align-items:center;gap:.4rem}
.language-switch{display:flex;gap:.38rem;margin-right:.25rem}
.language-switch a{min-width:2rem;text-align:center;font-weight:700}
.header-actions button{display:grid;place-items:center;width:40px;height:40px;padding:0;border:1px solid var(--line);background:transparent;cursor:pointer}
.header-actions button span{font-size:1.08rem}
main{position:relative}
/* ---------- hero: black-ice field, cold-open claim, instrument strip ---------- */
.hero{padding-block:0 clamp(3rem,6vw,5rem)}
.hero-field{position:relative;display:grid;grid-template-rows:minmax(0,1fr) auto auto;margin:0;min-height:min(880px,calc(100svh - 64px));overflow:clip;background:var(--abyss);color:var(--stage-ink)}
.hero-ice,.hero-scrim{grid-area:1/1/3/2;width:100%;height:100%}
.hero-ice{object-fit:cover;object-position:50% 62%}
.hero-scrim{background:linear-gradient(76deg,#0a1419f2 0%,#0a1419d9 36%,#0a14194d 62%,#0a141980 100%),linear-gradient(0deg,#0a1419f2 0%,#0a141900 32%)}
.hero-copy{position:relative;grid-area:1/1;align-self:center;max-width:830px;padding:clamp(2.4rem,5vw,4.2rem) clamp(1.4rem,4vw,3.4rem) 2rem}
.hero-kicker{display:flex;align-items:center;justify-content:space-between;gap:1rem;max-width:760px}
.eyebrow,.step-kicker,.stage-kicker{margin:0 0 .7rem;color:var(--steel-deep);font-family:var(--mono);font-size:.72rem;font-weight:700;letter-spacing:.14em;line-height:1.35;text-transform:uppercase}
.hero-kicker .eyebrow{margin:0;color:var(--signal-pale)}
.hero-copy .eyebrow::before,.chapter-kicker .eyebrow::before{content:"";display:inline-block;width:2.1rem;height:.55rem;margin-right:.6rem;vertical-align:baseline;background:var(--ticks)}
.hero-copy .eyebrow::before{--line-strong:var(--signal)}
.hero-seal{display:grid;flex:none;place-items:center;width:2.5rem;height:2.5rem;border:2px solid var(--signal);color:var(--signal-pale);font-family:var(--cjk);font-size:1.35rem;font-weight:700;line-height:1}
h1,h2,h3,.stage-value,.snd-value{font-family:var(--display);font-weight:800;line-height:1.02;letter-spacing:-.015em}
h1{max-width:14em;margin:.9rem 0 0;color:#f5fafb;font-size:clamp(2.4rem,4.6vw,4.3rem);text-wrap:balance}
h2{max-width:940px;margin:.2rem 0 1.3rem;font-size:clamp(2.1rem,4.4vw,4rem);text-wrap:balance}
h3{margin:.3rem 0 .9rem;font-size:clamp(1.5rem,2.6vw,2.4rem);text-wrap:balance}
html[lang="zh-Hans"] h1{line-height:1.14;letter-spacing:.01em}
html[lang="zh-Hans"] h2{line-height:1.26}
html[lang="zh-Hans"] .eyebrow,html[lang="zh-Hans"] .step-kicker,html[lang="zh-Hans"] .stage-kicker{letter-spacing:.2em}
.deck{max-width:700px;margin:1.2rem 0 .9rem;color:#c9d9df;font-size:clamp(1.02rem,1.6vw,1.24rem);line-height:1.5}
.hero-cold-open{max-width:700px;margin:1rem 0 0;padding:.9rem 0 .9rem 1.1rem;border-left:4px solid var(--signal);color:#f0f5f6;font-size:clamp(1rem,1.5vw,1.14rem);font-weight:600;line-height:1.5}
.citation-list{display:inline-flex;flex-wrap:wrap;gap:.22rem;margin-left:.3rem;vertical-align:super;font-family:var(--mono);font-size:.62em;line-height:1}
.citation{color:var(--steel);font-family:var(--mono);font-weight:700;text-decoration:none}
.citation:hover{text-decoration:underline}
.hero-copy .citation{color:var(--signal-pale)}
.hero-stats{position:relative;grid-area:2/1;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(230px,100%),1fr));gap:1px;margin:0;border-top:1px solid #2a434e;background:#2a434e}
.hero-stat{display:flex;flex-direction:column;gap:.3rem;padding:.95rem 1.1rem 1.05rem;background:#0d1b23ee}
.hero-stat strong{color:var(--signal-pale);font-family:var(--mono);font-size:clamp(1.05rem,1.7vw,1.5rem);font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}
.hero-stat span{color:#9fb6c0;font-family:var(--mono);font-size:.68rem;line-height:1.4}
.hero-stat .citation{color:var(--signal-pale)}
.hero-caption{grid-area:3/1;display:block;padding:.8rem clamp(1.4rem,4vw,3.4rem) .9rem;background:var(--floe);color:var(--muted);font-size:.76rem;line-height:1.5}
.hero-caption .credit{display:block;margin-top:.35rem;padding-top:.3rem;border-top:1px solid var(--line-soft);font-family:var(--mono);font-size:.66rem}
.hero-corridor{position:relative;grid-area:1/1/3/2;min-height:clamp(300px,44vw,580px);display:grid;place-items:center;overflow:hidden;background:var(--abyss)}
.photo-figure,.map-figure,.diagram-figure{margin:0}
.photo-figure img,.map-figure img,.diagram-figure img{display:block;width:100%;height:auto}
figcaption{padding:.68rem .35rem .25rem;color:var(--muted);font-size:.78rem;line-height:1.5}
.caption-copy{display:inline}
.credit{display:block;margin-top:.4rem;padding-top:.35rem;border-top:1px solid var(--line);font-family:var(--mono);font-size:.66rem;letter-spacing:.015em}
/* ---------- chapters: seven washes, register-mark dividers ---------- */
.story-chapter{position:relative;isolation:isolate;counter-increment:chapter;width:min(1240px,calc(100% - 2*clamp(1.5rem,4vw,4rem) - var(--rail-gutter)));margin-inline:auto;padding:clamp(4.5rem,9vw,8rem) 0 clamp(5rem,10vw,9rem);scroll-margin-top:5rem}
.story-chapter:before{content:"";position:absolute;z-index:-1;inset:0 calc((100vw - 100%)/-2);border-top:1px solid var(--line);background:var(--chapter-wash);transition:background-color .45s ease}
.story-chapter:after{content:"";position:absolute;left:0;right:0;top:-1px;height:5px;background:linear-gradient(180deg,var(--ink) 0 1px,transparent 1px 3px,var(--line-strong) 3px 4px,transparent 4px)}
.story-chapter[data-chapter="cifrele"]{--chapter-wash:#dfe8ec}
.story-chapter[data-chapter="endemicele"]{--chapter-wash:#d9e7e2}
.story-chapter[data-chapter="gheata"]{--chapter-wash:#e6eef2}
.story-chapter[data-chapter="olkhonul"]{--chapter-wash:#e7e0cb}
.story-chapter[data-chapter="fabrica"]{--chapter-wash:#ddd8ce}
.story-chapter[data-chapter="nivelul"]{--chapter-wash:#d7e4ea}
.story-chapter[data-chapter="baikalul-2026"]{--chapter-wash:#0b1216}
.chapter-opening{max-width:940px;margin-bottom:2.7rem}
.chapter-kicker{display:flex;align-items:center;gap:.8rem;margin-bottom:.9rem}
.chapter-kicker .eyebrow{margin:0}
.chapter-kicker .eyebrow::after{content:"0" counter(chapter);margin-left:.7rem;color:var(--muted);font-weight:400;letter-spacing:.1em}
.chapter-seal{display:grid;flex:none;place-items:center;width:2.3rem;height:2.3rem;border:2px solid var(--steel-deep);color:var(--steel-deep);font-family:var(--cjk);font-size:1.2rem;font-weight:700;line-height:1}
.chapter-lead{max-width:790px;font-size:1.04rem}
.chapter-lead p{margin:.6rem 0;color:#334f5a}
blockquote{position:relative;max-width:820px;margin:1.7rem 0 0;padding:.2rem 0 .2rem 1.2rem;border-left:3px solid var(--steel);color:var(--ink);font-style:italic;font-size:1.22rem;line-height:1.45}
/* the vigil night: baikalul-2026 reads bone on black */
.story-chapter[data-chapter="baikalul-2026"]{color:#e7ece7}
.story-chapter[data-chapter="baikalul-2026"] h2{color:#f2f5f3}
.story-chapter[data-chapter="baikalul-2026"] .chapter-lead p{color:#a9bcc0}
.story-chapter[data-chapter="baikalul-2026"] .eyebrow{color:var(--signal-pale)}
.story-chapter[data-chapter="baikalul-2026"] .eyebrow::before{--line-strong:var(--signal)}
.story-chapter[data-chapter="baikalul-2026"] .chapter-seal{border-color:var(--signal);color:var(--signal-pale)}
.story-chapter[data-chapter="baikalul-2026"] blockquote{border-color:var(--signal);color:#f2f5f3}
.story-chapter[data-chapter="baikalul-2026"] .chapter-media{border-color:#2a3a42}
.story-chapter[data-chapter="baikalul-2026"] .chapter-media>.eyebrow{color:var(--signal-pale)}
.story-chapter[data-chapter="baikalul-2026"] .media-grid>*{background:#141f26;border-color:#2a3a42}
.story-chapter[data-chapter="baikalul-2026"] figcaption{color:#8fa3ac}
.story-chapter[data-chapter="baikalul-2026"] .credit{border-color:#2a3a42}
.story-chapter[data-chapter="baikalul-2026"] .citation{color:var(--signal-pale)}
.story-chapter[data-chapter="baikalul-2026"] a{color:var(--signal-pale)}
.chapter-layout{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(300px,.82fr);gap:clamp(2rem,5vw,5.4rem);align-items:start}
.chapter-flip .chapter-layout{grid-template-columns:minmax(300px,.82fr) minmax(0,1.06fr)}
.chapter-flip .stage-column{grid-column:2;grid-row:1}
.chapter-flip .story-steps{grid-column:1;grid-row:1}
.story-chapter[data-chapter="baikalul-2026"] .story-step{border-color:#2a3a42;color:#7e939b}
.story-chapter[data-chapter="baikalul-2026"] .step-kicker{color:var(--signal-pale)}
.story-chapter[data-chapter="baikalul-2026"] .story-step.is-active{color:#f2f5f3}
.story-chapter[data-chapter="baikalul-2026"] .step-subline{color:#e7ece7}
/* ---------- sticky stage: one instrument panel per chapter ---------- */
.stage-column{min-width:0;align-self:stretch}
.stage-pin{position:sticky;top:12vh}
.sticky-stage{position:relative;display:flex;min-height:min(70vh,690px);flex-direction:column;justify-content:flex-end;overflow:hidden;padding:clamp(1.1rem,3vw,2.2rem);border:1px solid #0d2029;background:var(--stage-fill);color:var(--stage-ink);box-shadow:var(--shadow);transition:background-color .4s ease}
.sticky-stage:before{content:"";position:absolute;left:0;right:0;top:0;height:.6rem;background:var(--ticks);--line-strong:#3d5a66}
.sticky-stage[data-grade="paper"]{--stage-fill:#1e3038}
.sticky-stage[data-grade="ice"]{--stage-fill:#134e63}
.sticky-stage[data-grade="abyss"]{--stage-fill:#0b1b24}
.sticky-stage[data-grade="night"]{--stage-fill:#2c1f1a}
/* per-chapter panel voices; the ice chapter reads dark on pale */
.sticky-stage[data-chapter="cifrele"]{--stage-fill:#0b1b24}
.sticky-stage[data-chapter="cifrele"] .g-dot{fill:var(--alarm-bright)}
.sticky-stage[data-chapter="endemicele"]{--stage-fill:#0c2b28}
.sticky-stage[data-chapter="gheata"]{--stage-fill:#edf3f5;--stage-ink:#0e222b;--stage-muted:#3d5a66}
.sticky-stage[data-chapter="gheata"]:before{--line-strong:#5d7a86}
.sticky-stage[data-chapter="gheata"] .stage-kicker{color:var(--signal-deep)}
.sticky-stage[data-chapter="gheata"] .stage-citations .citation{color:var(--signal-deep)}
.sticky-stage[data-chapter="gheata"] .g-thread{stroke:#12333f}
.sticky-stage[data-chapter="gheata"] .g-aux{stroke:#5d7a86}
.sticky-stage[data-chapter="gheata"] .g-dot{stroke:#edf3f5}
.sticky-stage[data-chapter="gheata"] .g-aux-dot{fill:#5d7a86}
.sticky-stage[data-chapter="olkhonul"]{--stage-fill:#191a13}
.sticky-stage[data-chapter="olkhonul"] .g-thread{stroke:var(--sand)}
.sticky-stage[data-chapter="fabrica"]{--stage-fill:#211d18}
.sticky-stage[data-chapter="fabrica"] .g-wall{fill:#c96f4a22;stroke:#d8cfc0}
.sticky-stage[data-chapter="nivelul"]{--stage-fill:#0d1f29}
.sticky-stage[data-chapter="baikalul-2026"]{--stage-fill:#080e12}
.stage-gesture{position:absolute;top:4%;left:3%;width:94%;height:46%;opacity:.95}
.beat-art{position:absolute;inset:0;width:100%;height:100%;opacity:0;transition:opacity .4s ease}
.sticky-stage[data-beat="cifrele-1642"] .beat-art[data-g="cifrele-1642"],
.sticky-stage[data-beat="cifrele-pisces"] .beat-art[data-g="cifrele-pisces"],
.sticky-stage[data-beat="cifrele-varsta"] .beat-art[data-g="cifrele-varsta"],
.sticky-stage[data-beat="cifrele-volum"] .beat-art[data-g="cifrele-volum"],
.sticky-stage[data-beat="nerpa-100k"] .beat-art[data-g="nerpa-100k"],
.sticky-stage[data-beat="epischura-15mm"] .beat-art[data-g="epischura-15mm"],
.sticky-stage[data-beat="golomyanka-omul"] .beat-art[data-g="golomyanka-omul"],
.sticky-stage[data-beat="gheata-bule"] .beat-art[data-g="gheata-bule"],
.sticky-stage[data-beat="gheata-inele"] .beat-art[data-g="gheata-inele"],
.sticky-stage[data-beat="gheata-drumuri"] .beat-art[data-g="gheata-drumuri"],
.sticky-stage[data-beat="olkhon-71"] .beat-art[data-g="olkhon-71"],
.sticky-stage[data-beat="khuzhir-1500"] .beat-art[data-g="khuzhir-1500"],
.sticky-stage[data-beat="khoboy-colt"] .beat-art[data-g="khoboy-colt"],
.sticky-stage[data-beat="fabrica-47"] .beat-art[data-g="fabrica-47"],
.sticky-stage[data-beat="fabrica-2013"] .beat-art[data-g="fabrica-2013"],
.sticky-stage[data-beat="fabrica-imbuteliere"] .beat-art[data-g="fabrica-imbuteliere"],
.sticky-stage[data-beat="nivelul-1m"] .beat-art[data-g="nivelul-1m"],
.sticky-stage[data-beat="nivelul-1958"] .beat-art[data-g="nivelul-1958"],
.sticky-stage[data-beat="nivelul-muzeu"] .beat-art[data-g="nivelul-muzeu"],
.sticky-stage[data-beat="feb20"] .beat-art[data-g="feb20"],
.sticky-stage[data-beat="gheata-sigura"] .beat-art[data-g="gheata-sigura"],
.sticky-stage[data-beat="unesco-candidat"] .beat-art[data-g="unesco-candidat"],
.sticky-stage[data-beat="turism-presiune"] .beat-art[data-g="turism-presiune"]{opacity:1}
.stage-gesture svg{overflow:visible}
.stage-gesture .g-thread{fill:none;stroke:#d7e7ec;stroke-width:2.5;stroke-linecap:round}
.stage-gesture .g-aux{fill:none;stroke:#7e97a3;stroke-width:1.5;stroke-linecap:round}
.stage-gesture .g-dash{stroke-dasharray:3 8}
.stage-gesture .g-mark{fill:none;stroke:var(--signal);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
.stage-gesture .g-wall{fill:#ffffff14;stroke:#d7e7ec;stroke-width:2.5}
.stage-gesture .g-fill{fill:#e0a33c55;stroke:none}
.stage-gesture .g-dot{fill:var(--signal);stroke:#0a1419;stroke-width:2}
.stage-gesture .g-big{fill:var(--signal)}
.stage-gesture .g-aux-dot{fill:#7e97a3;stroke:none}
.story-step{min-height:clamp(380px,68vh,690px);display:flex;flex-direction:column;justify-content:center;padding:2.6rem 0;border-top:1px solid #7e97a3;color:var(--muted);scroll-margin-top:18vh;transition:color .25s ease}
.stage-note{position:absolute;right:1rem;top:1rem;margin:0;color:var(--stage-muted);font-family:var(--mono);font-size:.59rem;letter-spacing:.05em;text-transform:uppercase}
.stage-kicker{position:relative;margin:0 0 .65rem;color:var(--signal-pale)}
.stage-value{position:relative;max-width:100%;margin:.1rem 0 .5rem;color:var(--stage-ink);font-size:clamp(1.9rem,3.8vw,3.4rem);overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.stage-label{position:relative;max-width:35rem;margin:0;color:var(--stage-ink);font-size:.92rem;line-height:1.4}
.stage-subline{position:relative;max-width:34rem;margin:.8rem 0 0;color:var(--stage-muted);font-size:.8rem;line-height:1.45}
.stage-citations{position:relative;display:flex;flex-wrap:wrap;gap:.15rem .45rem;margin-top:.45rem;min-height:1rem;font-size:.78rem}
.stage-citations .citation{color:var(--signal-pale)}
.stage-progress{position:relative;align-self:flex-end;margin:.9rem 0 0;color:var(--stage-muted);font-family:var(--mono);font-size:.67rem;font-variant-numeric:tabular-nums}
.story-steps{min-width:0}
.story-step:last-child{border-bottom:1px solid #7e97a3}
.story-step.is-active{color:var(--ink)}
.story-step h3{max-width:600px}
.step-kicker{margin-bottom:.5rem}
.step-subline{max-width:570px;margin:.1rem 0 .8rem;font-size:1.04rem;font-weight:600;line-height:1.45}
.step-copy{max-width:570px;margin:.2rem 0;font-size:.99rem;line-height:1.68}
/* ---------- the sounding instrument: three stops, one plumb ---------- */
.sounding{max-width:1020px;margin:0 0 3.2rem;padding:clamp(1.4rem,3vw,2.4rem);border:1px solid var(--line);border-top:4px solid var(--ink);background:var(--panel);box-shadow:var(--shadow)}
.sounding-head{max-width:720px;margin-bottom:1.6rem}
.sounding-head h3{margin:.4rem 0 .6rem;font-size:clamp(1.4rem,2.4vw,2rem)}
.sounding-note{margin:.4rem 0;color:var(--muted);font-size:.92rem;line-height:1.55}
.dispute-tag{display:inline-block;margin:.7rem 0 0;padding:.3rem .6rem;border:1px solid var(--alarm);color:var(--alarm);font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase}
.dispute-tag .citation{color:var(--alarm)}
.sounding-instrument{position:relative;display:grid;grid-template-columns:minmax(230px,320px) minmax(0,1fr);gap:clamp(1.6rem,4vw,3.4rem);min-width:0;margin:0;padding:0;border:0}
.snd-stop{position:absolute;width:1px;height:1px;opacity:0}
.snd-stops{position:relative;display:flex;flex-direction:column;justify-content:space-between;gap:1rem;min-height:330px;padding:1rem 0}
.snd-line{position:absolute;left:.85rem;top:2.1rem;bottom:2.1rem;border-left:3px dashed var(--line-strong)}
.plumb{position:absolute;left:.85rem;top:var(--plumb,3.45rem);width:20px;height:20px;margin-left:-10px;background:var(--signal);border:3px solid var(--ink);border-radius:50%;transform:translateY(-50%);transition:top .35s ease}
#snd-0:checked~.snd-stops{--plumb:3.45rem}
#snd-1:checked~.snd-stops{--plumb:50%}
#snd-2:checked~.snd-stops{--plumb:calc(100% - 3.45rem)}
.snd-tick{position:relative;display:flex;flex-direction:column;justify-content:center;gap:.15rem;min-height:88px;padding-left:2.6rem;cursor:pointer}
.snd-tick:before{content:"";position:absolute;left:.85rem;top:50%;width:11px;height:11px;margin-left:-5.5px;background:var(--panel);border:2px solid var(--line-strong);border-radius:50%;transform:translateY(-50%)}
.snd-name{color:var(--muted);font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}
.snd-tick-value{color:var(--ink);font-family:var(--display);font-size:1.35rem;font-weight:700;font-variant-numeric:tabular-nums}
#snd-0:checked~.snd-stops [for="snd-0"]:before,#snd-1:checked~.snd-stops [for="snd-1"]:before,#snd-2:checked~.snd-stops [for="snd-2"]:before{background:var(--signal);border-color:var(--ink)}
#snd-0:checked~.snd-stops [for="snd-0"] .snd-name,#snd-1:checked~.snd-stops [for="snd-1"] .snd-name,#snd-2:checked~.snd-stops [for="snd-2"] .snd-name{color:var(--signal-deep)}
.sounding-instrument:has(#snd-0:focus-visible) [for="snd-0"],.sounding-instrument:has(#snd-1:focus-visible) [for="snd-1"],.sounding-instrument:has(#snd-2:focus-visible) [for="snd-2"]{outline:3px solid var(--signal-deep);outline-offset:4px}
.snd-readouts{position:relative;align-self:center;min-height:220px}
.snd-read{display:none;margin:0}
#snd-0:checked~.snd-readouts [data-snd="0"],#snd-1:checked~.snd-readouts [data-snd="1"],#snd-2:checked~.snd-readouts [data-snd="2"]{display:block}
.snd-value{margin:0 0 .4rem;color:var(--ink);font-size:clamp(2.6rem,5vw,4.2rem);font-variant-numeric:tabular-nums}
.snd-label{margin:0;color:var(--ink);font-size:1rem;line-height:1.45}
.snd-subline{margin:.6rem 0 0;color:var(--muted);font-size:.9rem;line-height:1.55}
.snd-read .citation{color:var(--steel)}
/* ---------- galleries ---------- */
.chapter-media{margin-top:4rem;padding-top:1.2rem;border-top:1px solid var(--line)}
.chapter-media>.eyebrow{max-width:900px;color:var(--steel-deep)}
.media-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:1.2rem}
.media-grid>*{min-width:0;padding:.55rem;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow)}
.media-grid .map-figure{grid-column:1/-1}
.media-grid .map-figure img{width:100%;max-height:720px;object-fit:contain;background:#0a151b}
.media-grid .diagram-figure img{width:100%;height:auto}
.media-grid .photo-figure img{width:100%;height:auto;max-height:540px;object-fit:contain}
.media-grid .map-figure figcaption,.media-grid .diagram-figure figcaption,.media-grid .photo-figure figcaption{padding:.75rem .45rem .35rem}
@media(min-width:741px){
  .story-chapter[data-chapter="cifrele"] .media-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .story-chapter[data-chapter="cifrele"] .media-grid .photo-figure img{max-height:420px}
  .story-chapter[data-chapter="olkhonul"] .media-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .story-chapter[data-chapter="olkhonul"] .media-grid .photo-figure img{max-height:420px}
}
/* ---------- sources & footer ---------- */
.sources{padding:5rem 0 8rem;scroll-margin-top:5rem}
.sources h2{font-size:clamp(2rem,3.8vw,3.2rem)}
.sources>p{max-width:760px;color:var(--muted)}
.sources ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 2.5rem;margin:2.5rem 0 0;padding:0;list-style:none}
.sources li{min-width:0;padding:1rem 0;border-top:1px solid var(--line);scroll-margin-top:6rem}
.sources li strong{display:block;font-family:var(--display);font-size:.98rem;font-weight:700}
.sources li p{margin:.32rem 0;color:var(--muted);font-family:var(--mono);font-size:.72rem;line-height:1.5;overflow-wrap:anywhere}
.source-status{font-family:var(--mono);font-size:.65rem}
.site-footer.shell{display:flex;align-items:center;justify-content:space-between;gap:1rem;width:100%;margin:0;padding:1.3rem clamp(1rem,3.5vw,3.8rem);padding-right:calc(clamp(1rem,3.5vw,3.8rem) + var(--rail-gutter));background:var(--abyss);color:#c9d9df;font-family:var(--mono);font-size:.74rem}
.site-footer p{margin:0}
.site-footer a{color:var(--signal-pale);text-decoration-thickness:1px}
/* ---------- the sounding rail: ticked plate, amber depth marker ---------- */
.reading-rail{position:fixed;z-index:30;top:50%;right:.55rem;display:flex;max-height:min(76vh,660px);flex-direction:column;align-items:center;gap:.18rem;overflow-y:auto;overflow-x:visible;transform:translateY(-50%);padding:.65rem .45rem;border:1px solid #2a434e;background:#0a1419f2;box-shadow:0 10px 32px #0c1a2133;scrollbar-width:thin}
.rail-river{position:absolute;left:50%;top:.8rem;bottom:.8rem;width:2px;background:linear-gradient(180deg,#cfe3ea 0 70%,var(--signal) 70% 100%);opacity:.6;transform:translateX(-50%)}
.rail-marker{position:absolute;left:50%;top:0;width:12px;height:12px;margin-left:-6px;background:var(--signal);border:2px solid #0a1419;outline:1px solid var(--signal-pale);border-radius:50%;transform:translateY(-30px);transition:transform .3s ease}
.reading-rail a{position:relative;z-index:1;display:grid;width:20px;height:12px;flex:none;place-items:center;color:var(--stage-ink);text-decoration:none}
.reading-rail a span{display:block;width:5px;height:5px;border:1px solid #cfe3ea;border-radius:50%;background:transparent;transition:width .2s ease,height .2s ease,background .2s ease}
.reading-rail a.rail-chapter{margin-top:.18rem}
.reading-rail a.rail-chapter span{width:7px;height:7px;border-color:var(--sand)}
.reading-rail a[aria-current="location"] span{width:10px;height:10px;background:var(--signal);border-color:var(--signal)}
.reading-rail a:after{content:attr(data-label);position:absolute;right:calc(100% + .7rem);top:50%;z-index:2;width:max-content;max-width:min(19rem,52vw);padding:.35rem .55rem;border:1px solid var(--line);background:var(--panel);color:var(--ink);font-family:var(--text);font-size:.78rem;line-height:1.25;opacity:0;pointer-events:none;transform:translate(4px,-50%);transition:opacity .15s ease,transform .15s ease}
.reading-rail a:hover:after,.reading-rail a:focus-visible:after{opacity:1;transform:translate(0,-50%)}
.to-top{position:fixed;right:.55rem;bottom:calc(.8rem + env(safe-area-inset-bottom));z-index:35;display:grid;place-items:center;width:48px;height:48px;min-width:48px;min-height:48px;padding:0;border:1px solid var(--line);border-radius:50%;background:var(--panel);color:var(--ink);box-shadow:var(--shadow);font-family:var(--mono);font-size:.9rem;font-weight:700;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(.5rem);transition:opacity .2s ease,transform .2s ease}
.to-top[hidden]{display:none!important}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top span:last-child{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
#share-status{position:fixed;left:1rem;bottom:calc(4.7rem + env(safe-area-inset-bottom));z-index:40;max-width:min(80vw,28rem);padding:.5rem .7rem;background:var(--abyss);color:#eef4f1;font-family:var(--mono);font-size:.78rem}
html:not([data-status]) #share-status:empty{display:none}
html[data-theme="dark"]{
  color-scheme:dark;
  --floe:#0d1a21;--panel:#14242d;--ink:#e6edf0;--muted:#9db4bd;
  --steel:#a9cede;--steel-deep:#cfe3ea;
  --signal-deep:#eec687;
  --alarm:#e0684e;
  --line:#2c434e;--line-soft:#1d3038;--line-strong:#5d7a86;
  --chapter-wash:#142129;
  --shadow:0 22px 55px #0006;
}
html[data-theme="dark"] .site-header{background:#0d1a21ee}
html[data-theme="dark"] .chapter-lead p{color:#a9bcc0}
html[data-theme="dark"] .story-chapter[data-chapter="cifrele"]{--chapter-wash:#142129}
html[data-theme="dark"] .story-chapter[data-chapter="endemicele"]{--chapter-wash:#12231f}
html[data-theme="dark"] .story-chapter[data-chapter="gheata"]{--chapter-wash:#12202b}
html[data-theme="dark"] .story-chapter[data-chapter="olkhonul"]{--chapter-wash:#23211a}
html[data-theme="dark"] .story-chapter[data-chapter="fabrica"]{--chapter-wash:#201f1c}
html[data-theme="dark"] .story-chapter[data-chapter="nivelul"]{--chapter-wash:#122128}
html[data-theme="dark"] .story-chapter[data-chapter="baikalul-2026"]{--chapter-wash:#0a1118}
html[data-theme="dark"] .story-chapter:after{background:linear-gradient(180deg,#cfe3ea 0 1px,transparent 1px 3px,var(--line-strong) 3px 4px,transparent 4px)}
html[data-theme="dark"] .chapter-kicker .eyebrow::after{color:var(--muted)}
html[data-theme="dark"] .chapter-seal{border-color:var(--steel);color:var(--steel)}
html[data-theme="dark"] blockquote{color:var(--ink)}
html[data-theme="dark"] .story-step{border-color:#2c434e}
html[data-theme="dark"] .story-step.is-active{color:var(--ink)}
html[data-theme="dark"] .sticky-stage[data-grade="paper"]{--stage-fill:#22333a}
html[data-theme="dark"] .sticky-stage[data-grade="ice"]{--stage-fill:#144a61}
html[data-theme="dark"] .sticky-stage[data-grade="abyss"]{--stage-fill:#0a2033}
html[data-theme="dark"] .sticky-stage[data-grade="night"]{--stage-fill:#331d18}
html[data-theme="dark"] .sticky-stage[data-chapter="cifrele"]{--stage-fill:#0b1b24}
html[data-theme="dark"] .sticky-stage[data-chapter="endemicele"]{--stage-fill:#0c2b28}
html[data-theme="dark"] .sticky-stage[data-chapter="gheata"]{--stage-fill:#dfe9ee}
html[data-theme="dark"] .sticky-stage[data-chapter="olkhonul"]{--stage-fill:#191a13}
html[data-theme="dark"] .sticky-stage[data-chapter="fabrica"]{--stage-fill:#211d18}
html[data-theme="dark"] .sticky-stage[data-chapter="nivelul"]{--stage-fill:#0d1f29}
html[data-theme="dark"] .sticky-stage[data-chapter="baikalul-2026"]{--stage-fill:#080e12}
html[data-theme="dark"] .chapter-media>.eyebrow{color:var(--steel-deep)}
html[data-theme="dark"] .reading-rail a:after{background:#14242d;color:#e6edf0}
html[data-theme="dark"] .dispute-tag{border-color:var(--alarm);color:var(--alarm)}
html[data-theme="dark"] .snd-tick-value,html[data-theme="dark"] .snd-value,html[data-theme="dark"] .snd-label{color:var(--ink)}
html[data-theme="dark"] .plumb{border-color:#e6edf0}
html[data-theme="dark"] .hero-caption{background:var(--floe)}
@media(max-width:1000px){
  :root{--rail-gutter:70px}
  .site-header.shell{gap:.8rem}
  .top-jumps{gap:.75rem}
  .top-jumps a{font-size:.7rem}
  .chapter-layout{grid-template-columns:minmax(0,1fr) minmax(270px,.85fr);gap:2rem}
  .chapter-flip .chapter-layout{grid-template-columns:minmax(270px,.85fr) minmax(0,1fr)}
  .sticky-stage{min-height:min(66vh,630px)}
}
@media(max-width:740px){
  :root{--rail-gutter:58px}
  html{font-size:17px}
  .site-header.shell{grid-template-columns:minmax(0,1fr) max-content;gap:.3rem .7rem;padding:.45rem .55rem;padding-right:calc(.55rem + var(--rail-gutter))}
  .wordmark{max-width:46vw}
  .top-jumps{grid-row:2;grid-column:1/-1;justify-content:flex-start;overflow-x:auto;scrollbar-width:none;gap:1rem;padding:.25rem 0 .4rem}
  .top-jumps::-webkit-scrollbar{display:none}
  .top-jumps a{font-size:.72rem}
  .header-actions{grid-row:1;grid-column:2}
  .language-switch{gap:.2rem}
  .header-actions button{width:36px;height:36px}
  .shell,.story-chapter{width:auto;margin-left:1rem;margin-right:calc(var(--rail-gutter) + .55rem)}
  .site-header.shell,.site-footer.shell{width:100%;margin:0}
  .hero{padding-block:0 2.6rem}
  .hero-field{min-height:0}
  .hero-copy{padding:2.6rem 1.2rem 1.6rem}
  .hero-seal{width:2.2rem;height:2.2rem;font-size:1.2rem}
  h1{font-size:clamp(2.3rem,11vw,3.4rem)}
  h2{font-size:clamp(1.9rem,8.4vw,3rem)}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-stat{padding:.75rem .85rem}
  .hero-caption{padding:.7rem 1.2rem .8rem}
  .story-chapter{padding-block:4rem 5rem}
  .chapter-opening{margin-bottom:1.5rem}
  .chapter-layout{display:flex;flex-direction:column;gap:0}
  .chapter-flip .stage-column,.chapter-flip .story-steps{grid-column:auto;grid-row:auto}
  .stage-column{order:0;width:100%;position:sticky;top:6.7rem;z-index:5}
  .stage-pin{position:static;padding:.35rem 0}
  .sticky-stage{min-height:clamp(245px,37svh,340px);padding:1rem 1.1rem}
  .stage-gesture{top:2%;left:2%;width:96%;height:38%}
  .stage-note{right:.7rem;top:.6rem;font-size:.52rem}
  .stage-value{font-size:clamp(1.7rem,6.6vw,2.6rem)}
  .stage-label{font-size:.8rem}
  .stage-subline{margin-top:.45rem;font-size:.74rem}
  .stage-progress{margin-top:.5rem}
  .story-steps{width:100%}
  .story-step{min-height:58svh;padding:2.4rem 0;scroll-margin-top:40svh}
  .step-copy{font-size:.95rem}
  .sounding{margin-bottom:2.2rem;padding:1.2rem}
  .sounding-instrument{grid-template-columns:1fr;gap:1.4rem}
  .snd-stops{min-height:290px}
  .snd-tick{min-height:72px}
  #snd-0:checked~.snd-stops{--plumb:3.1rem}
  #snd-2:checked~.snd-stops{--plumb:calc(100% - 3.1rem)}
  .snd-readouts{min-height:0}
  .chapter-media{margin-top:2.5rem}
  .media-grid{grid-template-columns:1fr}
  .media-grid .map-figure{grid-column:auto}
  .sources{width:auto;margin-left:1rem;margin-right:calc(var(--rail-gutter) + .55rem);padding:4rem 0 6rem}
  .sources ol{grid-template-columns:1fr}
  .site-footer.shell{align-items:flex-start;flex-wrap:wrap;padding:.9rem .6rem;padding-right:calc(.6rem + var(--rail-gutter))}
  .reading-rail{right:.2rem;gap:.08rem;max-height:74vh;padding:.45rem .32rem}
  .reading-rail .rail-step{display:none}
  .rail-river{top:.6rem;bottom:.6rem}
  .reading-rail a{width:28px;height:32px}
  .reading-rail a span{width:6px;height:6px}
  .reading-rail a.rail-chapter span{width:8px;height:8px}
  .to-top{right:.55rem;bottom:calc(.55rem + env(safe-area-inset-bottom));width:44px;height:44px;min-width:44px;min-height:44px}
}
@media(max-width:359px){
  :root{--rail-gutter:0px}
  .reading-rail{display:none}
  .shell,.story-chapter,.sources{margin-inline:.7rem;width:auto}
  .site-header.shell{padding-inline:.7rem}
  .site-footer.shell{padding-inline:.7rem}
  .hero{padding-top:0}
  h1{font-size:clamp(2.1rem,12vw,2.8rem)}
  .header-actions{gap:.2rem}
  .language-switch a{min-width:1.6rem;font-size:.69rem}
  .hero-stats{grid-template-columns:1fr}
  .stage-value{font-size:1.6rem}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}
}
@media print{
  .site-header,.reading-rail,.to-top,.stage-column,.hero-ice,.hero-scrim,.snd-stops,.snd-line,.plumb{display:none!important}
  .shell,.story-chapter,.sources{width:auto;margin:0}
  .hero-field{display:block;min-height:0;background:none;color:var(--ink)}
  .hero-copy{padding:0}
  .hero-copy h1,.hero-copy .deck,.hero-copy .hero-cold-open{color:var(--ink)}
  .hero-stats{display:block;background:none;border:0}
  .hero-stat{background:none;border-top:1px solid var(--line)}
  .hero-stat strong,.hero-stat span{color:var(--ink)}
  .story-step{min-height:0;opacity:1;page-break-inside:avoid}
  .chapter-layout{display:block}
  .story-chapter:before{display:none}
  .snd-read{display:block!important}
  .sounding-instrument{display:block}
}