/* ============================================================
   365网站导航 — 全站共享骨架
   /assets/site.css
   ============================================================ */

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

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
}

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

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

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

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

a{color:inherit}

table{border-collapse:collapse;width:100%}

/* ---------- tokens ---------- */
:root{
  --paper:#FBF4E7;
  --apricot:#F7E3C6;
  --card:#FFFCF6;
  --orange:#E2601F;
  --orange-deep:#B8410E;
  --ink:#14273D;
  --ink-deep:#0B1725;
  --slate:#6F8190;
  --line:#DDE3E6;
  --peach:#FFD3AC;
  --indigo:#2E5A88;

  --font-display:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --radius:3px;
  --radius-sm:2px;
  --shadow:0 2px 8px rgba(11,23,37,.06);
  --shadow-lift:0 4px 14px rgba(11,23,37,.09);
  --width:1280px;
  --pad:24px;
}

/* ---------- base ---------- */
body{
  background-color:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.16;
  letter-spacing:-.012em;
  color:var(--ink);
}

h1{font-size:clamp(32px,4.6vw,64px);font-weight:700}
h2{font-size:clamp(24px,2.8vw,36px)}
h3{font-size:clamp(18px,1.6vw,22px)}
h4{font-size:17px}

p{max-width:68ch}

a{text-decoration:none;color:var(--orange-deep)}

a:hover{color:var(--orange)}

:focus-visible{
  outline:2px solid var(--orange-deep);
  outline-offset:2px;
  border-radius:var(--radius-sm);
}

.foot :focus-visible{outline-color:var(--peach)}

/* ---------- utilities ---------- */
.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

.wrap{
  width:100%;
  max-width:var(--width);
  margin:0 auto;
  padding:0 var(--pad);
}

.wrap--narrow{max-width:760px}

.prose{max-width:68ch}
.prose p + p{margin-top:1em}
.prose > * + h2,
.prose > * + h3{margin-top:1.8em}
.prose > * + p{margin-top:.85em}

.ts-mono{
  font-family:var(--font-mono);
  font-weight:500;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

.ts-index{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--slate);
}

.rule{
  height:1px;
  border:0;
  background-color:var(--line);
  margin:0;
}

.eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--orange-deep);
  line-height:1.5;
}
.eyebrow::before{
  content:"";
  flex:none;
  width:22px;
  height:1px;
  background-color:var(--orange);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:2px 8px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background-color:var(--card);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.04em;
  color:var(--ink);
  line-height:1.7;
}
.tag--peach{
  background-color:var(--peach);
  border-color:var(--peach);
  color:var(--ink);
}

/* ---------- breadcrumb ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--slate);
  line-height:1.8;
}
.crumb a{color:var(--slate);text-decoration:none;border-bottom:1px solid transparent}
.crumb a:hover{color:var(--orange-deep);border-bottom-color:var(--orange)}
.crumb__sep{color:var(--line)}
.crumb [aria-current="page"]{color:var(--ink)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 16px;
  border:1px solid var(--ink);
  border-radius:var(--radius-sm);
  background-color:transparent;
  color:var(--ink);
  font-family:var(--font-display);
  font-size:14px;
  font-weight:600;
  line-height:1.4;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:hover{
  transform:translateY(-1px);
  background-color:var(--apricot);
  color:var(--ink);
}
.btn--solid{
  background-color:var(--orange);
  border-color:var(--orange);
  color:var(--card);
}
.btn--solid:hover{
  background-color:var(--orange-deep);
  border-color:var(--orange-deep);
  color:var(--card);
  box-shadow:var(--shadow-lift);
}
.btn--sm{padding:7px 12px;font-size:13px}

/* ---------- card / media ---------- */
.card{
  background-color:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.card:hover{
  transform:translateY(-2px);
  border-color:var(--ink);
  box-shadow:var(--shadow-lift);
}

.media{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background-color:var(--apricot);
}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--wide{aspect-ratio:16 / 9}
.media--sq{aspect-ratio:1 / 1}
.media--tall{aspect-ratio:4 / 5}
.media--band{aspect-ratio:21 / 9}
.media__cap{
  position:absolute;
  left:0;
  bottom:0;
  padding:5px 10px;
  background-color:var(--ink-deep);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  line-height:1.6;
}

/* ---------- reveal / filter hooks ---------- */
.js-on [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .2s ease,transform .2s ease;
  will-change:opacity,transform;
}
.js-on [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

.is-filtered-out{display:none !important}

/* ---------- skip link ---------- */
.skip{
  position:absolute;
  left:16px;
  top:-72px;
  z-index:200;
  padding:10px 16px;
  border-radius:var(--radius-sm);
  background-color:var(--ink-deep);
  color:var(--paper);
  font-size:14px;
  font-weight:600;
  text-decoration:none;
  transition:top .18s ease;
}
.skip:hover{color:var(--peach)}
.skip:focus{top:12px;color:var(--paper)}

/* ============================================================
   HEADER
   ============================================================ */
.mast{
  position:sticky;
  top:0;
  z-index:80;
  background-color:var(--paper);
  border-bottom:1px solid var(--line);
}

.mast__ticker{
  background-color:var(--ink-deep);
  color:#EDE3D2;
}
.mast__ticker-in{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  max-width:var(--width);
  margin:0 auto;
  padding:6px var(--pad);
}
.mast__ticker-note{
  min-width:0;
  max-width:none;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  font-family:var(--font-body);
  font-size:12px;
  line-height:1.7;
  letter-spacing:.02em;
  color:#C7B9A2;
}
.mast__ver{
  flex:none;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:1px 8px;
  border:1px solid rgba(251,244,231,.3);
  border-radius:var(--radius-sm);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.05em;
  line-height:1.7;
  white-space:nowrap;
  text-decoration:none;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.mast__ver:hover{
  background-color:var(--orange);
  border-color:var(--orange);
  color:var(--card);
}

.mast__main{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:22px;
  max-width:var(--width);
  margin:0 auto;
  padding:11px var(--pad);
}

/* brand */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  text-decoration:none;
}
.brand__mark{
  position:relative;
  display:block;
  flex:none;
  width:34px;
  height:34px;
  border:1.5px solid var(--ink);
  border-radius:var(--radius);
  background-color:var(--card);
}
.brand__mark::before{
  content:"";
  position:absolute;
  left:5px;
  top:5px;
  width:9px;
  height:9px;
  border-radius:1px;
  background-color:var(--orange);
}
.brand__mark::after{
  content:"";
  position:absolute;
  left:5px;
  right:5px;
  bottom:9px;
  height:1.5px;
  background-color:var(--ink);
  box-shadow:0 -6px 0 var(--ink);
}
.brand__text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
}
.brand__name{
  font-family:var(--font-display);
  font-size:16px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:500;
  letter-spacing:.09em;
  color:var(--slate);
}
.brand:hover .brand__name{color:var(--orange-deep)}

/* nav */
.mast__nav{
  display:flex;
  align-items:center;
  gap:2px;
  min-width:0;
  overflow-x:auto;
  overscroll-behavior-x:contain;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.mast__nav::-webkit-scrollbar{display:none}

.nav-link{
  position:relative;
  flex:none;
  padding:7px 11px;
  border-radius:var(--radius-sm);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:500;
  line-height:1.6;
  white-space:nowrap;
  text-decoration:none;
  transition:background-color .16s ease,color .16s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:11px;
  right:11px;
  bottom:3px;
  height:1.5px;
  background-color:var(--orange);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.nav-link:hover{
  background-color:var(--apricot);
  color:var(--ink);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{
  background-color:var(--peach);
  color:var(--ink);
  font-weight:600;
}
.nav-link[aria-current="page"]::after{
  background-color:var(--ink);
  transform:scaleX(1);
}

/* tools */
.mast__tools{
  display:flex;
  align-items:center;
  gap:8px;
}

.search{
  position:relative;
  display:flex;
  align-items:center;
}
.search__icon{
  position:absolute;
  left:10px;
  top:50%;
  width:11px;
  height:11px;
  margin-top:-7px;
  border:1.5px solid var(--slate);
  border-radius:50%;
  pointer-events:none;
}
.search__icon::after{
  content:"";
  position:absolute;
  right:-4px;
  bottom:-3px;
  width:5px;
  height:1.5px;
  border-radius:1px;
  background-color:var(--slate);
  transform:rotate(45deg);
}
.search__input{
  width:214px;
  padding:7px 10px 7px 30px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background-color:var(--card);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:13px;
  line-height:1.5;
  transition:border-color .16s ease,box-shadow .16s ease,width .2s ease;
}
.search__input::placeholder{color:var(--slate)}
.search__input:hover{border-color:var(--slate)}
.search__input:focus{
  border-color:var(--ink);
  box-shadow:var(--shadow);
  outline:none;
}

/* mobile toggle */
.nav-toggle{
  display:none;
  align-items:center;
  gap:7px;
  padding:7px 10px;
  border:1px solid var(--ink);
  border-radius:var(--radius-sm);
  background-color:var(--card);
  color:var(--ink);
  cursor:pointer;
  font-family:var(--font-display);
  font-size:13px;
  font-weight:600;
  line-height:1.4;
}
.nav-toggle:hover{background-color:var(--apricot)}
.nav-toggle__bars{
  position:relative;
  display:block;
  flex:none;
  width:14px;
  height:9px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:1.5px;
  background-color:var(--ink);
  transition:transform .18s ease;
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(3.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-4px) rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

/* reading progress */
.mast__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  pointer-events:none;
}
.mast__progress-bar{
  display:block;
  width:100%;
  height:100%;
  background-color:var(--orange);
  transform:scaleX(0);
  transform-origin:left center;
}

/* header responsive */
@media (max-width:1080px){
  .search{display:none}
}

@media (max-width:900px){
  .mast__main{
    grid-template-columns:minmax(0,1fr) auto;
    gap:10px;
    padding:10px 18px;
  }
  .brand{grid-column:1;grid-row:1}
  .mast__tools{grid-column:2;grid-row:1}
  .mast__nav{
    grid-column:1 / -1;
    grid-row:2;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    margin-top:8px;
    padding-top:8px;
    border-top:1px solid var(--line);
    overflow:visible;
  }
  .mast__nav[data-open]{display:flex}
  .nav-link{
    padding:11px 12px;
    font-size:15px;
  }
  .nav-link::after{display:none}
  .nav-toggle{display:inline-flex}
  .mast__ticker-in{padding:6px 18px}
  .mast__ticker-note{font-size:11.5px}
  .wrap{padding:0 18px}
}

@media (max-width:720px){
  .mast__ticker-note{display:none}
  .mast__ticker-in{justify-content:flex-start}
}

@media (max-width:420px){
  .brand__sub{display:none}
  .btn--sm{padding:6px 10px;font-size:12px}
}

/* ============================================================
   FOOTER
   ============================================================ */
.foot{
  margin-top:0;
  background-color:var(--ink-deep);
  color:#EDE3D2;
  border-top:2px solid var(--orange);
}
.foot__in{
  max-width:var(--width);
  margin:0 auto;
  padding:48px var(--pad) 26px;
}
.foot__grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:34px 28px;
}

.foot__brandline{
  max-width:none;
  font-family:var(--font-display);
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  letter-spacing:-.005em;
  color:var(--paper);
}
.foot__tagline{
  max-width:30ch;
  margin-top:8px;
  font-size:13.5px;
  line-height:1.75;
  color:#9FB0BC;
}
.foot__chips{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:16px;
}
.foot__chip{
  display:inline-flex;
  align-items:center;
  padding:1px 8px;
  border:1px solid rgba(255,211,172,.34);
  border-radius:var(--radius-sm);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.05em;
  line-height:1.8;
  color:var(--peach);
}

.foot__col{min-width:0}
.foot__title{
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  line-height:1.7;
  color:var(--peach);
}
.foot__links{
  display:flex;
  flex-direction:column;
  gap:9px;
}
.foot__link{
  display:inline-block;
  width:fit-content;
  border-bottom:1px solid transparent;
  color:#D6CBB8;
  font-size:14px;
  line-height:1.6;
  text-decoration:none;
  transition:color .16s ease,border-color .16s ease;
}
.foot__link:hover{
  color:var(--paper);
  border-bottom-color:var(--orange);
}

.foot__contact{
  margin-top:36px;
  padding-top:22px;
  border-top:1px solid rgba(221,227,230,.16);
}
.foot__contactline{
  max-width:74ch;
  font-size:13.5px;
  line-height:1.95;
  color:#C4B9A7;
}
.foot__service{
  max-width:74ch;
  margin-top:6px;
  font-size:12.5px;
  line-height:1.85;
  color:#8496A3;
}

.foot__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 20px;
  margin-top:22px;
  padding-top:16px;
  border-top:1px solid rgba(221,227,230,.16);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  line-height:1.8;
}
.foot__copy{max-width:none;color:#8B9CA8}
.foot__legal{max-width:none;color:#93A3AF}

@media (max-width:900px){
  .foot__in{padding:40px 18px 22px}
  .foot__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px}
  .foot__brand{grid-column:1 / -1}
  .foot__tagline{max-width:46ch}
}
@media (max-width:560px){
  .foot__grid{grid-template-columns:1fr;gap:24px}
  .foot__brand{grid-column:auto}
  .foot__contact{margin-top:28px}
  .foot__base{flex-direction:column;align-items:flex-start}
}

/* ============================================================
   reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .js-on [data-reveal],
  .js-on [data-reveal].is-visible{
    opacity:1;
    transform:none;
    transition:none;
  }
  .card:hover,
  .btn:hover{transform:none}
}