:root{
  --bg:#071521; --bg2:#0d2032; --card:#102a3d; --card2:#14334a;
  --ink:#f3ede2; --ink2:#c9c0b2; --ink3:#8f9aa6;
  --coral:#ff7a59; --coral2:#ff5c8a; --gold:#ffc857; --lagoon:#3ad1d6;
  --radius:24px; --pad:clamp(18px,5vw,28px);
  --serif:"Fraunces",Georgia,serif; --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit}
em{font-style:italic}
b{color:var(--ink);font-weight:600}

/* ---------- Hero ---------- */
.hero{position:relative;height:100svh;min-height:560px;display:flex;align-items:flex-end;overflow:hidden;isolation:isolate}
.hero__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;z-index:-2;animation:kb 18s ease-in-out infinite alternate}
@keyframes kb{from{transform:scale(1.02)}to{transform:scale(1.12)}}
.hero__shade{position:absolute;inset:0;z-index:-1;background:
  linear-gradient(180deg,rgba(7,21,33,.35) 0%,rgba(7,21,33,0) 30%,rgba(7,21,33,.55) 68%,var(--bg) 100%)}
.hero__text{padding:0 var(--pad) calc(env(safe-area-inset-bottom) + 44px);width:100%}
.hero__eyebrow{margin:0 0 14px;font:600 11px/1 var(--sans);letter-spacing:.22em;text-transform:uppercase;color:var(--gold)}
.hero__title{margin:0;font:300 clamp(58px,15vw,96px)/.92 var(--serif);font-variation-settings:"opsz" 144;letter-spacing:-.02em}
.hero__title em{font-weight:500;font-style:italic;background:linear-gradient(90deg,#ffd27a,var(--coral) 60%,var(--coral2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__sub{margin:18px 0 4px;font:400 17px/1.4 var(--sans);color:var(--ink)}
.hero__from{margin:0;font:italic 400 18px/1.3 var(--serif);color:var(--ink2)}
.hero__btn{display:inline-flex;align-items:center;gap:6px;margin-top:22px;padding:13px 20px;border-radius:999px;background:rgba(243,237,226,.14);border:1px solid rgba(243,237,226,.35);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);font:600 14px/1 var(--sans);color:var(--ink);text-decoration:none;animation:bob 2.2s ease-in-out infinite}
.hero__btn span{font-weight:400;color:var(--ink2)}
@keyframes bob{50%{transform:translateY(4px)}}

/* ---------- Nav ---------- */
.nav{position:fixed;left:0;right:0;top:0;z-index:20;transform:translateY(-110%);transition:transform .35s ease;padding-top:env(safe-area-inset-top);
  background:rgba(7,21,33,.72);-webkit-backdrop-filter:saturate(160%) blur(18px);backdrop-filter:saturate(160%) blur(18px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav.show{transform:none}
.nav__rail{display:flex;gap:8px;overflow-x:auto;padding:10px var(--pad);scrollbar-width:none;-webkit-overflow-scrolling:touch}
.nav__rail::-webkit-scrollbar{display:none}
.nav__chip{flex:0 0 auto;padding:8px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.12);font:600 13px/1 var(--sans);color:var(--ink2);text-decoration:none;white-space:nowrap;transition:.2s}
.nav__chip.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}

section,.chapter{scroll-margin-top:64px}

/* ---------- Intro ---------- */
.intro{padding:34px var(--pad) 10px;max-width:620px;margin:0 auto}
.intro__text{margin:0;font:italic 300 clamp(22px,5.6vw,28px)/1.38 var(--serif);font-variation-settings:"opsz" 72;color:var(--ink)}
.intro__sig{margin:18px 0 0;font:500 14px/1 var(--sans);letter-spacing:.08em;color:var(--gold)}

/* ---------- TOC ---------- */
.toc{padding:34px var(--pad) 8px;max-width:620px;margin:0 auto}
.toc__title{margin:0 0 6px;font:600 12px/1 var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--lagoon)}
.toc__hint{margin:0 0 14px;font-size:14px;color:var(--ink3)}
.toc__grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.toc__item{position:relative;aspect-ratio:1/1;border-radius:18px;overflow:hidden;background:var(--card);text-decoration:none;display:block;border:1px solid rgba(255,255,255,.07)}
.toc__item:first-child{grid-column:1/-1;aspect-ratio:2/1}
.toc__item img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.toc__item:active img{transform:scale(1.04)}
.toc__shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,21,33,0) 30%,rgba(7,21,33,.9) 100%)}
.toc__txt{position:absolute;left:0;right:0;bottom:0;padding:12px 14px;display:flex;flex-direction:column;gap:2px}
.toc__num{font:600 11px/1 var(--sans);letter-spacing:.18em;color:var(--gold)}
.toc__name{font:500 18px/1.1 var(--serif);font-variation-settings:"opsz" 72;color:var(--ink);text-wrap:balance}
.toc__n{font:500 12px/1 var(--sans);color:var(--ink2)}

/* ---------- Tips ---------- */
.tips{padding:30px var(--pad) 8px;max-width:620px;margin:0 auto}
.tips__title{margin:0 0 14px;font:600 12px/1 var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--lagoon)}
.tips__list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.tip{display:flex;gap:14px;padding:14px 16px;border-radius:18px;background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid rgba(255,255,255,.06)}
.tip__icon{font-size:22px;line-height:1.2;flex:0 0 auto}
.tip__t{margin:0;font:600 15px/1.35 var(--sans)}
.tip__d{margin:4px 0 0;font-size:14px;color:var(--ink2)}
.tip__link{display:inline-block;margin-top:8px;font:600 13px/1 var(--sans);color:var(--gold);text-decoration:none}

/* ---------- Chapter ---------- */
.chapter{padding:44px 0 6px;max-width:620px;margin:0 auto}
.chapter__banner{position:relative;margin:0 var(--pad);aspect-ratio:4/3;border-radius:var(--radius);overflow:hidden;background:var(--card)}
.chapter__banner img{width:100%;height:100%;object-fit:cover}
.chapter__shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,21,33,.05) 30%,rgba(7,21,33,.88) 100%)}
.chapter__head{position:absolute;left:0;right:0;bottom:0;padding:22px}
.chapter__num{display:inline-block;font:600 12px/1 var(--sans);letter-spacing:.2em;color:var(--gold);margin-bottom:10px}
.chapter__title{margin:0;font:500 clamp(30px,8vw,40px)/1.02 var(--serif);font-variation-settings:"opsz" 144;letter-spacing:-.015em;text-wrap:balance}
.chapter__kicker{margin:8px 0 0;font:italic 400 15px/1.3 var(--serif);color:var(--ink2)}
.chapter__lede{margin:18px var(--pad) 0;font-size:16px;color:var(--ink2);text-wrap:pretty}
.box{margin:16px var(--pad) 0;padding:16px 18px;border-radius:18px;background:rgba(255,200,87,.08);border:1px solid rgba(255,200,87,.25)}
.box__t{margin:0 0 8px;font:600 13px/1 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--gold)}
.box ul{margin:0;padding-left:18px;font-size:14.5px;color:var(--ink2)}
.box li{margin:4px 0}

/* ---------- Rail (swipe) ---------- */
.rail-wrap{margin-top:18px}
.rail-hint{margin:0 var(--pad) 10px;font:500 13px/1 var(--sans);color:var(--ink3);display:flex;align-items:center;gap:8px}
.rail-hint__sw{display:inline-flex;align-items:center;gap:4px;padding:6px 10px;border-radius:999px;background:rgba(255,200,87,.12);border:1px solid rgba(255,200,87,.3);color:var(--gold)}
.rail-hint__sw b{display:inline-block;animation:nudge 1.4s ease-in-out infinite}
.rail-hint__pos{margin-left:auto;font-variant-numeric:tabular-nums;color:var(--ink2)}
@keyframes nudge{50%{transform:translateX(5px)}}
.rail{display:flex;align-items:flex-start;gap:14px;overflow-x:auto;padding:4px var(--pad) 10px;scroll-snap-type:x mandatory;scroll-padding-inline:var(--pad);scrollbar-width:none;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}
.rail::-webkit-scrollbar{display:none}
.card{flex:0 0 min(84vw,380px);scroll-snap-align:start;border-radius:var(--radius);overflow:hidden;background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid rgba(255,255,255,.07);box-shadow:0 18px 40px -22px rgba(0,0,0,.7);display:flex;flex-direction:column}
.card__media{position:relative;aspect-ratio:4/3;background:#0b1b2b}
.card__media img{width:100%;height:100%;object-fit:cover}
.card__n{position:absolute;top:12px;left:12px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:rgba(7,21,33,.72);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.2);font:600 14px/1 var(--sans);color:var(--gold)}
.card__body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__title{margin:0;font:500 23px/1.12 var(--serif);font-variation-settings:"opsz" 72;letter-spacing:-.01em;text-wrap:balance}
.pills{display:flex;flex-wrap:wrap;gap:6px}
.pill{font:500 12px/1 var(--sans);padding:7px 10px;border-radius:999px;background:rgba(58,209,214,.1);color:#bfeff1;border:1px solid rgba(58,209,214,.22);white-space:nowrap}
.card__text{margin:0;font-size:15px;color:var(--ink2);text-wrap:pretty}
.card__actions{margin-top:auto;padding-top:6px;display:flex;flex-wrap:wrap;gap:8px}
.btn{display:inline-flex;align-items:center;gap:7px;padding:11px 15px;border-radius:999px;font:600 14px/1 var(--sans);text-decoration:none;transition:transform .15s}
.btn:active{transform:scale(.97)}
.btn--primary{background:linear-gradient(90deg,var(--coral),var(--coral2));color:#fff;box-shadow:0 8px 20px -8px rgba(255,92,138,.7)}
.btn--ghost{border:1px solid rgba(255,255,255,.18);color:var(--ink)}
.dots{display:flex;justify-content:center;gap:6px;margin-top:-4px}
.dots i{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.18);transition:.25s}
.dots i.on{width:18px;border-radius:3px;background:var(--gold)}

/* ---------- Next chapter ---------- */
.next{display:flex;flex-direction:column;gap:3px;margin:8px var(--pad) 0;padding:14px 18px;border-radius:18px;border:1px dashed rgba(255,255,255,.18);text-decoration:none;color:var(--ink)}
.next span{font:500 12px/1 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--ink3)}
.next strong{font:500 18px/1.2 var(--serif);font-variation-settings:"opsz" 72}

/* ---------- Footer ---------- */
.foot{padding:60px var(--pad) calc(env(safe-area-inset-bottom) + 40px);text-align:center;max-width:620px;margin:0 auto}
.foot__big{margin:0;font:300 clamp(30px,8vw,42px)/1.1 var(--serif);font-variation-settings:"opsz" 144}
.foot__big em{color:var(--gold)}
.foot__small{margin:14px 0 0;font-size:14px;color:var(--ink3)}
.credits{margin-top:28px;font-size:12px;color:var(--ink3);text-align:left}
.credits summary{cursor:pointer;text-align:center;color:var(--ink3)}
.credits ul{padding-left:18px;margin:12px 0 0}
.credits li{margin:4px 0;overflow-wrap:anywhere}
.credits a{color:var(--ink2)}

@media (min-width:700px){
  .hero__text{max-width:620px;margin:0 auto}
  .card{flex-basis:380px}
}
@media (prefers-reduced-motion:reduce){
  .hero__img,.hero__btn,.rail-hint__sw b{animation:none}
  html{scroll-behavior:auto}
}