/* ===== 1. reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,address,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{border:0;background:none;padding:0;cursor:pointer;text-align:left}
table{border-collapse:collapse;width:100%}
address{font-style:normal}
hr{border:0;border-top:1px solid var(--line);margin:0}

/* ===== 2. tokens ===== */
:root{
  --blue:#1E5FA8;
  --blue-d:#143F73;
  --blue-l:#D8E7F6;
  --orange:#F2610C;
  --orange-s:#FFD9BE;
  --green:#2F8F5B;
  --green-s:#DCF0E4;
  --ink:#16232F;
  --gray:#5A6B7A;
  --paper:#F7F5F1;
  --line:#E3E6E9;
  --violet:#6E5AA8;
  --ease:cubic-bezier(.22,1,.36,1);
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-display:"Source Han Sans SC","Alibaba PuHuiTi 3.0","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --rail-w:0px;
  --topbar-h:58px;
  --shell-max:1240px;
  --gap:clamp(16px,2vw,28px);
  --shadow-paper:3px 3px 0 rgba(227,230,233,.85);
}
@media (min-width:1024px){:root{--rail-w:88px;--topbar-h:68px}}

/* ===== 3. base ===== */
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  padding-bottom:58px;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:1024px){
  body{padding-left:var(--rail-w);padding-top:var(--topbar-h);padding-bottom:0}
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.12;letter-spacing:-.02em}
h1{font-size:clamp(2.4rem,7.4vw,5.2rem)}
h2{font-size:clamp(1.7rem,4vw,2.8rem)}
h3{font-size:clamp(1.15rem,2.2vw,1.55rem)}
small{font-size:.8125rem}
::selection{background:var(--orange-s);color:var(--ink)}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:2px}
a:focus-visible,button:focus-visible{outline-offset:3px}

/* ===== 4. layout ===== */
.shell{width:100%;max-width:var(--shell-max);margin-inline:auto;padding-inline:clamp(16px,3vw,40px)}
#main-content{display:block;padding-top:clamp(18px,3vw,38px);scroll-margin-top:calc(var(--topbar-h) + 14px)}
#main-content:focus{outline:none}
.grid-12{display:grid;grid-template-columns:minmax(0,1fr);gap:var(--gap)}
.split{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(20px,3vw,40px)}
@media (min-width:900px){
  .grid-12{grid-template-columns:repeat(12,minmax(0,1fr))}
  .span-3{grid-column:span 3}
  .span-4{grid-column:span 4}
  .span-5{grid-column:span 5}
  .span-6{grid-column:span 6}
  .span-7{grid-column:span 7}
  .span-8{grid-column:span 8}
  .span-9{grid-column:span 9}
  .span-12{grid-column:span 12}
  .start-2{grid-column-start:2}
  .start-3{grid-column-start:3}
  .split{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
  .split--wide{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
  .split--flip{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
}
.section{position:relative;padding-block:clamp(34px,6vw,84px);border-top:1px solid var(--line)}
.section:first-of-type{border-top:0;padding-top:clamp(16px,2vw,28px)}
.section__head{display:grid;gap:10px;margin-bottom:clamp(20px,3vw,36px);max-width:56ch}
.section__num{display:flex;align-items:center;gap:12px;font-family:var(--font-mono);font-size:12px;letter-spacing:.24em;color:var(--blue)}
.section__num::after{content:"";flex:1;height:1px;background:var(--line)}
.section__title{font-size:clamp(1.7rem,4.2vw,3rem)}
.section__lead{color:var(--gray);font-size:1rem;max-width:40em}
.prose{max-width:38em}
.prose p+p{margin-top:1em}
.prose h3{margin-top:1.6em;margin-bottom:.5em}

/* ===== 5. breadcrumbs ===== */
.breadcrumbs{padding:14px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--gray)}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item::after{content:"/";color:var(--line)}
.breadcrumbs__item:last-child::after{content:""}
.breadcrumbs__link{color:var(--gray);transition:color .18s var(--ease)}
.breadcrumbs__link:hover{color:var(--blue)}
.breadcrumbs__current{color:var(--ink);font-weight:600}

/* ===== 6. buttons / labels ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.8rem 1.4rem;border:1px solid transparent;border-radius:2px;font-size:.9375rem;font-weight:700;letter-spacing:.02em;line-height:1.2;transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn--primary{background:var(--orange);color:#fff;box-shadow:3px 3px 0 rgba(20,63,115,.16)}
.btn--primary:hover{background:#D9530A;transform:translateY(-2px)}
.btn--ghost{border-color:var(--blue);background:#fff;color:var(--blue-d)}
.btn--ghost:hover{background:var(--blue-l);transform:translateY(-2px)}
.btn--quiet{background:var(--blue-d);color:var(--paper)}
.btn--quiet:hover{background:var(--blue);transform:translateY(-2px)}
.btn--block{width:100%}
.label,.tag{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.16em;line-height:1.5;padding:2px 8px;border:1px solid var(--line);border-radius:2px;background:#fff;color:var(--gray)}
.tag--orange{background:var(--orange-s);border-color:#F7C49E;color:#8A3200}
.tag--green{background:var(--green-s);border-color:#BFE3CE;color:#1C5C3A}
.tag--blue{background:var(--blue-l);border-color:#C3DAF1;color:var(--blue-d)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:0}
.annotation{writing-mode:vertical-rl;font-size:12px;letter-spacing:.18em;color:var(--gray)}
.annotation--tilt{writing-mode:horizontal-tb;display:inline-block;transform:rotate(-4deg);transform-origin:left center}

/* ===== 7. cards / panels / data ===== */
.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:3px;padding:clamp(16px,2.2vw,26px);box-shadow:var(--shadow-paper);transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.card::before{content:"";position:absolute;left:-1px;top:-1px;bottom:-1px;width:3px;border-radius:3px 0 0 3px;background:var(--orange);transform:scaleY(0);transform-origin:top center;transition:transform .3s var(--ease)}
.card:hover{transform:translateY(-2px);box-shadow:5px 6px 0 rgba(227,230,233,.9)}
.card:hover::before{transform:scaleY(1)}
.card--paper{background:var(--paper)}
.card--ink{background:var(--blue-d);border-color:var(--blue-d);color:var(--paper)}
.card--ink .card__meta{color:#B9D2EA}
.card__title{font-family:var(--font-display);font-weight:800;font-size:1.15rem;letter-spacing:0;margin-bottom:6px}
.card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--gray)}
.panel{background:var(--blue-l);border:1px solid #C6DAEE;border-radius:3px;padding:clamp(16px,2.2vw,24px)}
.panel__title{display:flex;align-items:center;justify-content:space-between;gap:12px;font-family:var(--font-display);font-weight:800;font-size:1.05rem;margin-bottom:12px}
.panel__grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(132px,1fr))}
.stat{background:#fff;border:1px solid var(--line);border-radius:2px;padding:10px 12px}
.stat__label{font-size:12px;letter-spacing:.14em;color:var(--gray)}
.stat__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(1.2rem,2.2vw,1.7rem);font-weight:700;line-height:1.2;color:var(--blue-d)}
.stat__value--up{color:var(--green)}
.stat__value--hot{color:var(--orange)}

/* ===== 8. timeline ===== */
.timeline{display:flex;gap:clamp(14px,2vw,26px);overflow-x:auto;padding:22px 4px 14px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}
.timeline__item{position:relative;flex:0 0 min(260px,78vw);scroll-snap-align:start;padding-top:18px;border-top:2px solid var(--line)}
.timeline__item::before{content:"";position:absolute;top:-6px;left:0;width:10px;height:10px;border-radius:50%;background:#fff;border:2px solid var(--blue)}
.timeline__item[data-state="live"]{border-top-color:var(--orange)}
.timeline__item[data-state="live"]::before{background:var(--orange);border-color:var(--orange)}
.timeline__item[data-state="done"]::before{background:var(--green);border-color:var(--green)}
.timeline__time{font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;color:var(--gray)}
.timeline__title{font-weight:800;font-size:1.05rem;margin-top:4px}

/* ===== 9. tabs / filter / disclosure / fav ===== */
.tabs__list{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.tabs__btn{padding:8px 14px;border:1px solid var(--line);border-radius:2px;background:#fff;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--gray);transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.tabs__btn:hover{border-color:var(--blue);color:var(--blue-d)}
.tabs__btn[aria-selected="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
.tabs__panel[hidden]{display:none}
.filter{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.filter__btn{padding:6px 13px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px;font-weight:600;color:var(--gray);transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.filter__btn:hover{border-color:var(--blue);color:var(--blue-d)}
.filter__btn[aria-pressed="true"]{background:var(--blue-l);border-color:var(--blue);color:var(--blue-d)}
.disclosure{background:#fff;border:1px solid var(--line);border-radius:3px;overflow:hidden}
.disclosure+.disclosure{margin-top:10px}
.disclosure__trigger{display:flex;width:100%;align-items:center;gap:14px;padding:16px 18px;font-size:1rem;transition:background-color .2s var(--ease)}
.disclosure__trigger:hover{background:var(--blue-l)}
.disclosure__state{flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--line);transition:background-color .2s var(--ease)}
.disclosure[data-open] .disclosure__state{background:var(--green)}
.disclosure__label{flex:1;font-weight:800}
.disclosure__mark{position:relative;flex:0 0 auto;width:14px;height:14px}
.disclosure__mark::before,.disclosure__mark::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--blue)}
.disclosure__mark::before{width:14px;height:2px}
.disclosure__mark::after{width:2px;height:14px;transition:transform .25s var(--ease)}
.disclosure[data-open] .disclosure__mark::after{transform:translate(-50%,-50%) scaleY(0)}
.disclosure__panel{height:0;overflow:hidden;transition:height .3s var(--ease)}
.disclosure__inner{padding:14px 18px 20px;border-top:1px solid var(--line);color:var(--gray);font-size:.95rem}
.fav-btn{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border:1px solid var(--line);border-radius:2px;background:#fff;font-size:13px;font-weight:600;color:var(--gray);transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.fav-btn:hover{border-color:var(--blue);color:var(--blue-d)}
.fav-btn[aria-pressed="true"]{background:var(--green-s);border-color:var(--green);color:#1C5C3A}
.fav-btn__mark{flex:0 0 auto;width:10px;height:10px;border:2px solid currentColor;border-radius:2px}
.fav-btn[aria-pressed="true"] .fav-btn__mark{background:currentColor}

/* ===== 10. media ===== */
.media{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:3px;background:var(--blue-l)}
.media img{width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--3x4{aspect-ratio:3/4}
.media--1x1{aspect-ratio:1/1}
.media--wide{aspect-ratio:21/9}
.media__caption{position:absolute;left:0;right:0;bottom:0;padding:10px 12px;font-size:12px;letter-spacing:.1em;color:#fff;background:linear-gradient(180deg,rgba(22,35,47,0),rgba(22,35,47,.82))}
.media-stack{position:relative}
.media-stack__frame{position:absolute;inset:0;border:1px solid var(--line);border-radius:3px;transform:translate(10px,10px);pointer-events:none}
@media (max-width:600px){.media-stack__frame{transform:translate(6px,6px)}}

/* ===== 11. header ===== */
.skip-link{position:fixed;top:-140px;left:12px;z-index:200;padding:10px 18px;border-radius:2px;background:var(--blue-d);color:var(--paper);font-size:14px;font-weight:700;box-shadow:3px 3px 0 rgba(242,97,12,.55);transition:top .2s var(--ease)}
.skip-link:focus{top:12px}
.site-header{position:relative;z-index:60}

.rail{position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;align-items:center;gap:12px;height:58px;padding:0 14px;background:var(--blue-d);color:var(--paper);border-top:2px solid var(--orange)}
.rail__brand{display:flex;align-items:center;gap:8px;min-width:0}
.rail__brand-cn{font-family:var(--font-display);font-weight:900;font-size:1.05rem;letter-spacing:.06em;white-space:nowrap}
.rail__brand-en{display:none}
.rail__tagline{display:none}
.rail__chapters{display:none}
.rail__meta{display:flex;align-items:center;gap:8px;margin-left:auto}
.rail__label{font-size:11px;letter-spacing:.2em;color:#9DC0E4}
.rail__count{min-width:26px;padding:1px 7px;border-radius:2px;background:var(--orange);color:#fff;text-align:center;font-family:var(--font-mono);font-size:13px;font-weight:700}
.rail__cta{flex:0 0 auto;padding:8px 14px;border-radius:2px;background:var(--orange);color:#fff;font-size:13px;font-weight:700;letter-spacing:.06em;transition:background-color .2s var(--ease),transform .2s var(--ease)}
.rail__cta:hover{background:#D9530A;transform:translateY(-1px)}
.rail__num{font-size:11px}
@media (min-width:1024px){
  .rail{right:auto;top:0;bottom:0;width:var(--rail-w);height:auto;flex-direction:column;align-items:center;justify-content:flex-start;gap:14px;padding:22px 0 18px;border-top:0;border-right:1px solid rgba(255,255,255,.16)}
  .rail__brand{flex-direction:column;gap:10px}
  .rail__brand-cn{writing-mode:vertical-rl;font-size:1.3rem;letter-spacing:.34em}
  .rail__brand-en{display:block;writing-mode:vertical-rl;font-family:var(--font-mono);font-size:9px;letter-spacing:.44em;color:#9DC0E4}
  .rail__tagline{display:block;writing-mode:vertical-rl;font-size:12px;letter-spacing:.22em;color:#9DC0E4}
  .rail__chapters{display:flex;flex-direction:column;align-items:center;gap:10px;margin-top:auto;padding-top:12px}
  .rail__chapter{display:grid;place-items:center;width:36px;height:32px;border:1px solid rgba(255,255,255,.22);border-radius:2px;color:#BCD6EF;transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
  .rail__chapter:hover{background:var(--orange);border-color:var(--orange);color:#fff}
  .rail__chapter[aria-current="page"]{background:var(--paper);border-color:var(--paper);color:var(--blue-d)}
  .rail__meta{flex-direction:column;gap:4px;margin-left:0;margin-top:14px}
  .rail__cta{writing-mode:vertical-rl;letter-spacing:.22em;padding:14px 10px;margin-top:14px}
}
@media (min-width:1024px) and (max-height:800px){.rail__tagline{display:none}}

.topbar{position:fixed;top:0;left:0;right:0;z-index:65;height:var(--topbar-h);background:rgba(247,245,241,.92);backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid var(--line);transition:background-color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease)}
.topbar[data-scrolled="true"]{background:rgba(247,245,241,.86);border-bottom-color:var(--blue-d);box-shadow:0 1px 0 rgba(20,63,115,.08),0 12px 26px -22px rgba(20,63,115,.55)}
.topbar__inner{position:relative;display:flex;align-items:center;gap:clamp(10px,2vw,22px);height:100%;padding-inline:clamp(14px,3vw,28px)}
.topbar__brand{display:inline-flex;align-items:baseline;gap:6px;font-family:var(--font-display);font-weight:900;font-size:1.02rem;letter-spacing:.04em;color:var(--blue-d)}
.topbar__brand-mark{font-family:var(--font-mono);font-size:10px;letter-spacing:.26em;color:var(--gray)}
.topbar__pulse{display:none;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--gray)}
.topbar__dot{flex:0 0 auto;width:7px;height:7px;border-radius:50%;background:var(--green);animation:pulse-dot 2.6s var(--ease) infinite}
@keyframes pulse-dot{
  0%{box-shadow:0 0 0 0 rgba(47,143,91,.45)}
  70%{box-shadow:0 0 0 9px rgba(47,143,91,0)}
  100%{box-shadow:0 0 0 0 rgba(47,143,91,0)}
}
@media (min-width:900px){.topbar__pulse{display:flex}}
@media (min-width:1024px){.topbar{left:var(--rail-w)}.topbar__brand{display:none}}

.nav{position:fixed;top:0;right:0;bottom:0;z-index:80;display:flex;flex-direction:column;width:min(88vw,380px);padding:74px 22px 48px;background:var(--paper);border-left:1px solid var(--line);box-shadow:-8px 0 0 rgba(20,63,115,.1);transform:translateX(102%);transition:transform .3s var(--ease);overflow-y:auto;overscroll-behavior:contain}
.nav[data-open]{transform:translateX(0)}
.nav__title{font-family:var(--font-display);font-weight:900;font-size:1.25rem;margin-bottom:6px;color:var(--blue-d)}
.nav__group{margin:18px 0 4px;padding-bottom:6px;border-bottom:1px solid var(--line);font-size:11px;font-weight:600;letter-spacing:.22em;color:var(--gray)}
.nav__list{display:flex;flex-direction:column}
.nav__item{display:block}
.nav__link{position:relative;display:block;padding:11px 2px;font-size:1.15rem;font-weight:800;letter-spacing:.02em;color:var(--ink);transition:color .18s var(--ease),padding-left .18s var(--ease)}
.nav__link:hover{color:var(--blue);padding-left:10px}
.nav__link[aria-current="page"]{color:var(--blue)}
.nav__link[aria-current="page"]::after{content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);width:3px;height:20px;background:var(--orange)}
@media (min-width:1024px){
  .nav{position:static;flex-direction:row;align-items:center;gap:2px;width:auto;margin-left:auto;padding:0;background:transparent;border:0;box-shadow:none;transform:none;overflow:visible}
  .nav__title,.nav__group{display:none}
  .nav__list{flex-direction:row;align-items:center}
  .nav__link{padding:8px 12px;border-radius:2px;font-size:.9375rem;font-weight:700;transition:background-color .2s var(--ease),color .2s var(--ease)}
  .nav__link:hover{padding-left:12px;background:var(--blue-l);color:var(--blue-d)}
  .nav__link[aria-current="page"]{background:var(--blue);color:#fff}
  .nav__link[aria-current="page"]::after{display:none}
}

.nav-toggle{display:inline-flex;align-items:center;gap:8px;margin-left:auto;padding:9px 13px;border:1px solid var(--blue);border-radius:2px;background:#fff;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--blue-d);transition:background-color .2s var(--ease)}
.nav-toggle:hover{background:var(--blue-l)}
.nav-toggle__bars{position:relative;flex:0 0 auto;width:16px;height:2px;background:currentColor}
.nav-toggle__bars::before,.nav-toggle__bars::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;transition:transform .25s var(--ease)}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav__close{position:absolute;top:16px;right:16px;margin-left:0;background:var(--paper)}
@media (min-width:1024px){.nav-toggle,.nav__close{display:none}}

.nav__scrim{position:fixed;inset:0;z-index:75;background:rgba(20,63,115,.42);opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease)}
.nav__scrim[data-open]{opacity:1;visibility:visible}
@media (min-width:1024px){.nav__scrim{display:none}}

.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none}
.scroll-progress__bar{display:block;width:100%;height:100%;background:linear-gradient(90deg,var(--blue),var(--orange));transform:scaleX(0);transform-origin:left center;transition:transform .12s linear}

/* ===== 12. footer ===== */
.site-footer{position:relative;margin-top:clamp(44px,8vw,110px);background:var(--paper);color:var(--ink);border-top:1px solid var(--line)}
.footer__stack{position:relative;max-width:var(--shell-max);margin-inline:auto;padding:clamp(34px,5vw,72px) clamp(16px,3vw,40px) clamp(26px,4vw,46px)}
.footer__stack::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:repeating-linear-gradient(90deg,var(--orange) 0 48px,var(--blue) 48px 96px,var(--green) 96px 132px,var(--line) 132px 180px)}
.footer__grid{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(24px,3vw,40px)}
@media (min-width:640px){.footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer__grid{grid-template-columns:1.3fr .7fr .7fr .7fr 1.3fr}}
.footer__brand-name{font-family:var(--font-display);font-weight:900;font-size:clamp(1.5rem,3vw,2.15rem);letter-spacing:-.01em;color:var(--blue-d)}
.footer__summary{margin-top:10px;max-width:34ch;font-size:14px;color:var(--gray)}
.footer__signature{margin-top:14px;font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;color:var(--blue)}
.footer__col-title{padding-bottom:8px;margin-bottom:12px;border-bottom:1px solid var(--line);font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--gray)}
.footer__list{display:flex;flex-direction:column;gap:9px}
.footer__link{position:relative;display:inline-block;font-size:.95rem;color:var(--ink);transition:color .2s var(--ease)}
.footer__link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--orange);transform:scaleX(0);transform-origin:left center;transition:transform .25s var(--ease)}
.footer__link:hover{color:var(--blue)}
.footer__link:hover::after,.footer__link[aria-current="page"]::after{transform:scaleX(1)}
.footer__link[aria-current="page"]{color:var(--blue)}
.footer__contact{display:grid;gap:12px;align-content:start}
.footer__contact-item{display:grid;gap:2px}
.footer__contact-label{font-size:11px;font-weight:600;letter-spacing:.18em;color:var(--gray)}
.footer__contact-value{font-size:14px;color:var(--ink);word-break:break-all}
.footer__note{margin-top:4px;padding-left:10px;border-left:2px solid var(--orange-s);font-size:12px;line-height:1.7;color:var(--gray)}
.footer__legal{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;margin-top:clamp(22px,3vw,36px);padding-top:20px;border-top:1px solid var(--line)}
.footer__legal-line{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--gray)}

/* ===== 13. motion ===== */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.js [data-reveal].is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .js [data-reveal]{opacity:1;transform:none}
  .timeline{scroll-snap-type:none}
}