/* =========================================================
   贝博BALLBET · 共享 Site Kit
   /assets/site.css
   tokens · reset · typography · header · footer ·
   containers · grids · base components
   ========================================================= */

:root{
  --abyss:#062A3A;
  --depth:#0B3A4F;
  --tide:#135A73;
  --pearl:#F7F4EC;
  --cream:#E7E0D2;
  --rock:#9AA3A0;
  --moss:#6F7F62;
  --clay:#B66A4A;
  --coral:#FF6B4A;
  --cyan:#2DE2E6;
  --gold:#C8A96A;
  --ink:#10262E;

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Barlow Condensed","IBM Plex Sans Condensed","Oswald","Arial Narrow","Helvetica Neue",sans-serif;

  --header-h:76px;
  --shell-max:1240px;
  --gutter:clamp(18px,4vw,56px);
  --radius:2px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --rule-light:1px solid rgba(154,163,160,.34);
  --rule-dark:1px solid rgba(16,38,46,.14);
  --shadow-card:0 22px 44px -38px rgba(6,42,58,.65);
}

@media (max-width:720px){
  :root{ --header-h:64px; }
}

/* ---------- reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }

html{
  -webkit-text-size-adjust:100%;
  scroll-padding-top:calc(var(--header-h) + 20px);
}

@media (prefers-reduced-motion: no-preference){
  html{ scroll-behavior:smooth; }
}

body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd,address{
  margin:0;
}

ul,ol{ padding:0; list-style:none; }

a{ color:inherit; text-decoration:none; }

button{
  font:inherit;
  color:inherit;
  background:none;
  border:0;
  padding:0;
  cursor:pointer;
}

img,svg,video{ display:block; max-width:100%; height:auto; }

address{ font-style:normal; }

main{ display:block; }

#main-content{ scroll-margin-top:calc(var(--header-h) + 12px); }

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:1px;
  box-shadow:0 0 0 4px rgba(45,226,230,.22);
}

/* ---------- base typography ---------- */
body{
  font-family:var(--font-body);
  font-size:clamp(16px,.32vw + 15px,18px);
  line-height:1.85;
  font-weight:400;
  color:var(--ink);
  background-color:var(--pearl);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  min-height:100vh;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.16;
  letter-spacing:-.01em;
}

.display-1{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(44px,6vw,92px);
  line-height:.98;
  letter-spacing:-.02em;
}

.h2{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(30px,3.6vw,54px);
  line-height:1.08;
  letter-spacing:-.015em;
}

.h3{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(20px,1.8vw,26px);
  line-height:1.32;
}

.lead{
  font-size:clamp(17px,.9vw + 15px,20px);
  line-height:1.85;
  font-weight:400;
}

.kicker{
  display:block;
  font-family:var(--font-num);
  font-size:11px;
  line-height:1.6;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--rock);
}

.kicker--cyan{ color:var(--tide); }
.kicker--gold{ color:var(--gold); }

.num{
  font-family:var(--font-num);
  font-weight:600;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}

.measure{ max-width:62ch; }
.measure--narrow{ max-width:46ch; }

/* ---------- containers & sections ---------- */
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.shell--narrow{ max-width:880px; }

.section{ padding-block:clamp(48px,7vw,110px); }

.section--paper{ background:var(--pearl); color:var(--ink); }
.section--cream{ background:var(--cream); color:var(--ink); }
.section--abyss{ background:var(--abyss); color:rgba(247,244,236,.86); }
.section--depth{ background:var(--depth); color:rgba(247,244,236,.86); }

.section--abyss .kicker,
.section--depth .kicker{ color:rgba(247,244,236,.55); }

.divider{
  height:1px;
  border:0;
  background:linear-gradient(90deg,rgba(154,163,160,.55),rgba(154,163,160,.12));
}

/* ---------- grids ---------- */
.grid{
  display:grid;
  gap:clamp(18px,2.4vw,34px);
}

.grid--2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
.grid--3{ grid-template-columns:repeat(3,minmax(0,1fr)); }
.grid--4{ grid-template-columns:repeat(4,minmax(0,1fr)); }

@media (max-width:900px){
  .grid--3,.grid--4{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}

@media (max-width:600px){
  .grid--2,.grid--3,.grid--4{ grid-template-columns:1fr; }
}

.with-index{
  display:grid;
  grid-template-columns:210px minmax(0,1fr);
  gap:clamp(24px,4vw,64px);
  align-items:start;
}

@media (max-width:900px){
  .with-index{ grid-template-columns:1fr; }
}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:90;
  background:transparent;
  color:var(--pearl);
  transition:background-color .18s var(--ease), box-shadow .18s var(--ease);
}

.site-header::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(154,163,160,.55) 16%,rgba(45,226,230,.42) 50%,rgba(154,163,160,.55) 84%,transparent);
  opacity:.75;
  transition:opacity .18s var(--ease);
  pointer-events:none;
}

.site-header[data-solid="true"]{
  background:var(--abyss);
  box-shadow:0 1px 0 rgba(45,226,230,.16), 0 26px 48px -42px rgba(0,0,0,.95);
}

.site-header[data-solid="true"]::after{ opacity:.32; }

.header-inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:clamp(12px,2vw,32px);
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
  min-height:var(--header-h);
}

/* brand lockup */
.brand-lockup{
  display:grid;
  grid-template-columns:12px auto;
  grid-template-rows:auto auto;
  column-gap:10px;
  align-items:center;
  line-height:1.1;
  color:var(--pearl);
}

.brand-lockup::before{
  content:"";
  grid-row:1 / span 2;
  width:11px;
  height:11px;
  border:1px solid var(--coral);
  transform:rotate(45deg);
  justify-self:center;
}

.brand-mark{
  font-family:var(--font-display);
  font-weight:800;
  font-size:19px;
  letter-spacing:.01em;
  line-height:1.15;
  color:var(--pearl);
}

.brand-edition{
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:rgba(247,244,236,.55);
  white-space:nowrap;
}

/* nav */
.primary-nav{ justify-self:center; }

.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.3vw,24px);
}

.nav-list a{
  position:relative;
  display:block;
  padding:8px 4px;
  font-size:14px;
  letter-spacing:.02em;
  white-space:nowrap;
  color:rgba(247,244,236,.76);
  transition:color .16s var(--ease);
}

.nav-list a::after{
  content:"";
  position:absolute;
  left:4px;
  right:4px;
  bottom:2px;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}

.nav-list a:hover{ color:var(--pearl); }
.nav-list a:hover::after{ transform:scaleX(1); }

.nav-list a[aria-current="page"]{ color:var(--pearl); }

.nav-list a[aria-current="page"]::after{
  height:2px;
  background:var(--coral);
  transform:scaleX(1);
}

/* tools */
.header-tools{
  justify-self:end;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.4vw,20px);
}

.header-note{
  font-size:11px;
  letter-spacing:.14em;
  color:rgba(247,244,236,.55);
  white-space:nowrap;
}

/* nav toggle */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  border:1px solid rgba(247,244,236,.34);
  border-radius:var(--radius);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--pearl);
  transition:border-color .16s var(--ease), background-color .16s var(--ease);
}

.nav-toggle:hover{
  border-color:rgba(247,244,236,.72);
  background-color:rgba(247,244,236,.08);
}

.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:3px;
  width:16px;
  height:12px;
}

.nav-toggle__bars i{
  display:block;
  height:1px;
  width:100%;
  background:currentColor;
  transition:transform .18s var(--ease), opacity .18s var(--ease);
}

.site-header[data-open="true"] .nav-toggle__bars i:nth-child(1){ transform:translateY(4px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(2){ opacity:0; }
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(3){ transform:translateY(-4px) rotate(-45deg); }

.nav-toggle__text{ font-size:12px; }

/* skip link */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:10px 18px;
  background:var(--coral);
  color:var(--abyss);
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
  border-radius:var(--radius);
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}

.skip-link:focus{ transform:translateY(0); }

@media (max-width:1180px){
  .header-note{ display:none; }
  .brand-edition{ display:none; }
  .brand-lockup{ grid-template-rows:auto; }
  .brand-lockup::before{ grid-row:1 / span 1; }
}

@media (max-width:980px){
  .header-inner{ grid-template-columns:1fr auto; }
  .nav-toggle{ display:inline-flex; }
  .primary-nav{ justify-self:stretch; }

  .primary-nav{
    position:fixed;
    inset:var(--header-h) 0 auto 0;
    background:var(--abyss);
    border-top:1px solid rgba(154,163,160,.28);
    border-bottom:1px solid rgba(154,163,160,.28);
    padding:10px var(--gutter) 26px;
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .18s var(--ease), transform .18s var(--ease), visibility .18s var(--ease);
    box-shadow:0 30px 50px -40px rgba(0,0,0,.9);
  }

  .site-header[data-open="true"] .primary-nav{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }

  .nav-list a{
    padding:15px 2px;
    font-size:16px;
    border-bottom:1px solid rgba(154,163,160,.16);
  }

  .nav-list a::after{ display:none; }

  .nav-list a[aria-current="page"]{ color:var(--cyan); }
}

@media (max-width:560px){
  .header-tools .btn{
    padding:8px 12px;
    font-size:11px;
    letter-spacing:.06em;
  }
  .brand-mark{ font-size:17px; }
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  padding-block:clamp(52px,7vw,96px) 26px;
  color:rgba(247,244,236,.72);
  background:
    radial-gradient(120% 90% at 92% 0%, rgba(19,90,115,.55), transparent 62%),
    var(--abyss);
}

.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,230,.45) 30%,rgba(200,169,106,.45) 62%,transparent);
  pointer-events:none;
}

.site-footer::after{
  content:"";
  position:absolute;
  right:-140px;
  top:-140px;
  width:420px;
  height:420px;
  border:1px solid rgba(154,163,160,.14);
  border-radius:50%;
  pointer-events:none;
}

.footer-inner{
  position:relative;
  z-index:1;
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.footer-grid{
  display:grid;
  grid-template-columns:minmax(250px,1.5fr) auto auto minmax(240px,1.15fr);
  gap:clamp(28px,4vw,64px);
  align-items:start;
}

.footer-brandline{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(20px,2vw,26px);
  line-height:1.2;
  letter-spacing:.01em;
  color:var(--pearl);
}

.footer-summary{
  margin-top:14px;
  max-width:34ch;
  font-size:14px;
  line-height:1.9;
  color:rgba(247,244,236,.62);
}

.footer-heading{
  margin-bottom:16px;
  font-family:var(--font-num);
  font-size:11px;
  font-weight:600;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
}

.footer-col ul li + li{ margin-top:10px; }

.footer-col a{
  font-size:14px;
  color:rgba(247,244,236,.78);
  border-bottom:1px solid transparent;
  padding-bottom:1px;
  transition:color .16s var(--ease), border-color .16s var(--ease);
}

.footer-col a:hover{
  color:var(--pearl);
  border-bottom-color:var(--coral);
}

.footer-contact{ display:grid; gap:12px; }

.footer-contact__line{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:12px;
  align-items:baseline;
}

.footer-contact__label{
  font-size:10px;
  letter-spacing:.2em;
  color:var(--rock);
}

.footer-contact__value{
  font-size:14px;
  line-height:1.7;
  color:rgba(247,244,236,.86);
  overflow-wrap:anywhere;
}

.footer-contact__value--num{
  font-family:var(--font-num);
  font-weight:600;
  letter-spacing:.06em;
}

.footer-service{
  margin-top:16px;
  padding-left:12px;
  border-left:1px solid rgba(45,226,230,.35);
  font-size:12px;
  line-height:1.8;
  color:rgba(247,244,236,.52);
}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px 26px;
  margin-top:clamp(36px,5vw,64px);
  padding-top:22px;
  border-top:1px solid rgba(154,163,160,.22);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(247,244,236,.5);
}

.footer-copy{ color:rgba(247,244,236,.5); }

.footer-icp{
  font-family:var(--font-num);
  letter-spacing:.12em;
  color:rgba(247,244,236,.56);
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  align-items:center;
}

.footer-legal a{
  color:rgba(247,244,236,.68);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease), border-color .16s var(--ease);
}

.footer-legal a:hover{
  color:var(--cyan);
  border-bottom-color:rgba(45,226,230,.6);
}

@media (max-width:1040px){
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .footer-brand{ grid-column:1 / -1; }
  .footer-col--contact{ grid-column:1 / -1; }
}

@media (max-width:620px){
  .footer-grid{ grid-template-columns:1fr; }
  .footer-base{ flex-direction:column; align-items:flex-start; }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  line-height:1.4;
  text-align:center;
  transition:background-color .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease), transform .16s var(--ease);
}

.btn:hover{ transform:translateY(-1px); }
.btn:active{ transform:translateY(0); }

.btn--primary{ background:var(--coral); color:var(--abyss); }
.btn--primary:hover{ background:#FF8A6E; }

.btn--ghost{
  border-color:rgba(247,244,236,.42);
  color:var(--pearl);
}
.btn--ghost:hover{
  background:rgba(247,244,236,.1);
  border-color:var(--pearl);
}

.btn--ink{ background:var(--abyss); color:var(--pearl); }
.btn--ink:hover{ background:var(--depth); }

.btn--cyan{ background:var(--cyan); color:var(--abyss); }
.btn--cyan:hover{ background:#6FEDEF; }

.btn--gold{ background:var(--gold); color:var(--abyss); }
.btn--gold:hover{ background:#D8BE88; }

.btn--sm{
  padding:9px 16px;
  font-size:12px;
  letter-spacing:.1em;
}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border:1px solid currentColor;
  border-radius:999px;
  font-size:11px;
  letter-spacing:.14em;
  line-height:1.6;
  white-space:nowrap;
}

.tag--cyan{
  color:var(--tide);
  border-color:rgba(45,226,230,.6);
  background:rgba(45,226,230,.14);
}

.tag--gold{
  color:#8A6D31;
  border-color:rgba(200,169,106,.7);
  background:rgba(200,169,106,.18);
}

.tag--coral{
  color:#B23C21;
  border-color:rgba(255,107,74,.6);
  background:rgba(255,107,74,.14);
}

.tag--moss{
  color:#42513A;
  border-color:rgba(111,127,98,.6);
  background:rgba(111,127,98,.16);
}

/* ---------- cards ---------- */
.card{
  padding:clamp(20px,2.4vw,32px);
  background:var(--pearl);
  color:var(--ink);
  border:1px solid var(--rule-dark);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
}

.card--dark{
  background:var(--depth);
  color:rgba(247,244,236,.86);
  border-color:rgba(154,163,160,.28);
  box-shadow:0 30px 60px -50px rgba(0,0,0,.95);
}

/* ---------- breadcrumbs ---------- */
.breadcrumbs{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--rock);
}

.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
}

.breadcrumbs li:not(:last-child)::after{
  content:"／";
  margin-inline:8px;
  color:rgba(154,163,160,.55);
}

.breadcrumbs a{
  color:inherit;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease), border-color .16s var(--ease);
}

.breadcrumbs a:hover{
  color:var(--tide);
  border-bottom-color:rgba(19,90,115,.4);
}

.section--abyss .breadcrumbs,
.section--depth .breadcrumbs{ color:rgba(247,244,236,.55); }

.section--abyss .breadcrumbs a:hover,
.section--depth .breadcrumbs a:hover{ color:var(--cyan); }

/* ---------- chapter index ---------- */
.chapter-index{
  position:sticky;
  top:calc(var(--header-h) + 26px);
  align-self:start;
  display:flex;
  flex-direction:column;
  gap:2px;
  padding-left:15px;
  border-left:1px solid rgba(154,163,160,.38);
}

.chapter-index__label{
  margin-bottom:10px;
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--rock);
}

.chapter-index a{
  position:relative;
  display:block;
  padding:7px 0;
  font-size:13px;
  line-height:1.6;
  color:rgba(16,38,46,.62);
  transition:color .16s var(--ease), padding-left .16s var(--ease);
}

.chapter-index a::before{
  content:"";
  position:absolute;
  left:-16px;
  top:50%;
  width:2px;
  height:0;
  background:var(--coral);
  transform:translateY(-50%);
  transition:height .18s var(--ease);
}

.chapter-index a:hover{ color:var(--ink); }

.chapter-index a[aria-current="true"]{
  padding-left:6px;
  font-weight:600;
  color:var(--ink);
}

.chapter-index a[aria-current="true"]::before{ height:18px; }

.chapter-index--dark{ border-left-color:rgba(247,244,236,.28); }
.chapter-index--dark a{ color:rgba(247,244,236,.62); }
.chapter-index--dark a:hover{ color:var(--pearl); }
.chapter-index--dark a[aria-current="true"]{ color:var(--cyan); }
.chapter-index--dark a::before{ background:var(--cyan); }

@media (max-width:900px){
  .chapter-index{
    position:static;
    flex-direction:row;
    flex-wrap:wrap;
    gap:6px 18px;
    padding-left:0;
    padding-top:14px;
    border-left:0;
    border-top:1px solid rgba(154,163,160,.38);
  }
  .chapter-index__label{ width:100%; margin-bottom:4px; }
  .chapter-index a{ padding:4px 0; }
  .chapter-index a::before{ display:none; }
  .chapter-index a[aria-current="true"]{ padding-left:0; }
}

/* ---------- image frames ---------- */
.img-frame{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  border:1px solid rgba(154,163,160,.3);
  border-radius:var(--radius);
  background:linear-gradient(155deg, var(--depth), var(--abyss) 72%);
}

.img-frame::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background-image:
    linear-gradient(rgba(45,226,230,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45,226,230,.09) 1px, transparent 1px);
  background-size:38px 38px;
  opacity:.65;
  pointer-events:none;
}

.img-frame img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.88) contrast(1.05);
}

.img-frame--16x9{ aspect-ratio:16 / 9; }
.img-frame--4x3{ aspect-ratio:4 / 3; }
.img-frame--1x1{ aspect-ratio:1 / 1; }
.img-frame--21x9{ aspect-ratio:21 / 9; }
.img-frame--portrait{ aspect-ratio:3 / 4; }

.img-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  padding:8px 13px;
  background:rgba(6,42,58,.85);
  color:var(--pearl);
  font-size:11px;
  letter-spacing:.16em;
  line-height:1.6;
}

.img-frame__placeholder{
  position:relative;
  z-index:1;
  display:grid;
  place-items:center;
  min-height:180px;
  height:100%;
  padding:22px;
  color:rgba(247,244,236,.42);
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  text-align:center;
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;
  right:clamp(14px,2.4vw,32px);
  bottom:clamp(14px,2.4vw,32px);
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 16px;
  border:1px solid rgba(45,226,230,.45);
  border-radius:var(--radius);
  background:var(--abyss);
  color:var(--pearl);
  font-size:11px;
  letter-spacing:.18em;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .2s var(--ease), transform .2s var(--ease), visibility .2s var(--ease), background-color .16s var(--ease), border-color .16s var(--ease);
}

.to-top[data-visible="true"]{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}

.to-top:hover{
  background:var(--depth);
  border-color:var(--cyan);
}

/* ---------- reveal ---------- */
[data-reveal]{
  transition:opacity .24s var(--ease), transform .24s var(--ease);
}

[data-reveal].reveal-pending{
  opacity:0;
  transform:translateY(12px);
}

/* ---------- prose ---------- */
.prose{ font-size:inherit; }

.prose > * + *{ margin-top:1.1em; }

.prose h2{
  margin-top:2.2em;
  margin-bottom:.6em;
  font-size:clamp(26px,3vw,40px);
  line-height:1.14;
}

.prose h3{
  margin-top:1.8em;
  margin-bottom:.5em;
  font-size:clamp(20px,2vw,26px);
}

.prose a{
  color:var(--tide);
  border-bottom:1px solid rgba(19,90,115,.35);
  transition:color .16s var(--ease), border-color .16s var(--ease);
}

.prose a:hover{
  color:var(--abyss);
  border-bottom-color:var(--coral);
}

.prose ul li{
  position:relative;
  padding-left:20px;
}

.prose ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:6px;
  border:1px solid var(--clay);
  transform:rotate(45deg);
}

.prose li + li{ margin-top:.5em; }

/* ---------- motion & visibility helpers ---------- */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }

  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }

  [data-reveal].reveal-pending{
    opacity:1;
    transform:none;
  }

  .btn:hover,
  .to-top{ transform:none; }
}

@media (prefers-contrast: more){
  .nav-list a{ color:var(--pearl); }
  .footer-summary,
  .footer-service{ color:rgba(247,244,236,.82); }
}