/* ===========================================================
   aomen-xintaijing.com.cn · /assets/site.css
   共享外壳：命令栏 · 纵向收藏长卷底层 · 港口夜色页脚
   =========================================================== */

:root{
  --ink:#08211D;
  --pine:#0F3A32;
  --peacock:#1C5A4C;
  --gold:#D6A44A;
  --gold-soft:#F0D49B;
  --gold-deep:#8A6520;
  --cinnabar:#C94F26;
  --indigo:#2A2340;
  --wine:#6B2B33;
  --paper:#F3ECE0;
  --sand:#E4D9C6;
  --ink-text:#16211E;
  --mist:#8FA79E;

  --font-display:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular","DejaVu Sans Mono",Consolas,"Courier New",monospace;

  --maxw:1180px;
  --header-h:90px;
  --radius-organic:26px 8px 26px 8px;
  --shadow-deep:0 24px 60px rgba(4,18,16,.34);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ---------- base ---------- */
body{
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  color:var(--ink-text);
  background:var(--paper);
  padding-top:var(--header-h);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;letter-spacing:-.02em;line-height:1.18}
:focus-visible{outline:2px solid var(--cinnabar);outline-offset:3px;border-radius:4px}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
.mono{font-family:var(--font-mono);letter-spacing:.04em;font-size:13px}
.muted{color:var(--mist)}

/* ---------- typography helpers ---------- */
.h-display{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(44px,7vw,104px);
  line-height:1.02;
  letter-spacing:-.035em;
}
.h-section{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(28px,3.4vw,46px);
  line-height:1.15;
  letter-spacing:-.02em;
}
.h-sub{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(20px,2vw,26px);
  line-height:1.3;
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--gold-deep);
}
.lead{font-size:clamp(17px,1.6vw,20px);line-height:1.72;max-width:62ch;color:rgba(22,33,30,.78)}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:-70px;left:16px;z-index:90;
  background:var(--gold);color:#22190A;
  padding:10px 18px;border-radius:0 0 12px 12px;
  font-weight:600;font-size:15px;
  transition:top .2s ease;
}
.skip-link:focus{top:0}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:linear-gradient(180deg,#08211D 0%,#0B2C26 100%);
  color:var(--paper);
  border-bottom:1px solid rgba(214,164,74,.28);
  box-shadow:0 10px 30px rgba(4,18,16,.28);
}
.command-bar__inner{
  max-width:var(--maxw);margin:0 auto;height:56px;
  display:flex;align-items:center;gap:16px;
  padding:0 clamp(14px,3vw,28px);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--paper)}
.brand__mark{
  position:relative;flex:0 0 auto;width:26px;height:26px;
  border-radius:10px 3px 10px 3px;
  background:linear-gradient(140deg,var(--gold) 0%,#8A6520 58%,var(--cinnabar) 100%);
  box-shadow:inset 0 0 0 1px rgba(240,212,155,.4),0 6px 14px rgba(0,0,0,.35);
}
.brand__mark::after{
  content:"";position:absolute;right:4px;bottom:4px;width:7px;height:7px;border-radius:50%;
  background:var(--ink);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-family:var(--font-display);font-weight:800;font-size:16px;letter-spacing:.02em}
.brand__sub{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--gold-soft)}

.nav{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__item{display:block}
.nav__link{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:8px;
  font-size:15px;color:rgba(243,236,224,.82);
  transition:color .18s ease,background-color .18s ease;
}
.nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav__link:hover{color:var(--paper);background:rgba(28,90,76,.55)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{color:var(--gold-soft);font-weight:600}
.nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--gold)}

.command-bar__actions{flex:0 0 auto;display:flex;align-items:center;gap:10px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 16px;border-radius:999px;
  font-family:var(--font-body);font-size:14px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn--copy{background:var(--gold);color:#22190A;box-shadow:0 6px 18px rgba(214,164,74,.22)}
.btn--copy:hover{background:var(--gold-soft)}
.btn--copy.is-done{background:var(--cinnabar);color:#FFF3E8}
.btn--ghost{border-color:rgba(240,212,155,.5);color:var(--gold-soft)}
.btn--ghost:hover{background:rgba(240,212,155,.14);border-color:var(--gold)}
.btn--solid{background:var(--peacock);color:var(--paper)}
.btn--solid:hover{background:var(--pine);transform:translateY(-1px)}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:8px 12px;border-radius:10px;
  border:1px solid rgba(240,212,155,.35);
  color:var(--gold-soft);
}
.nav-toggle__label{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em}
.nav-toggle__bars{position:relative;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:currentColor;
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}

.status-line{
  max-width:var(--maxw);margin:0 auto;
  display:flex;align-items:center;gap:10px;flex-wrap:nowrap;overflow:hidden;
  padding:6px clamp(14px,3vw,28px) 8px;
  border-top:1px solid rgba(28,90,76,.9);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--mist);max-height:34px;
  transition:max-height .3s ease,padding .3s ease,opacity .25s ease,border-color .3s ease;
}
.site-header[data-scrolled] .status-line{
  max-height:0;opacity:0;padding-top:0;padding-bottom:0;border-top-color:transparent;
}
.status-line__dot{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;background:var(--cinnabar);
  box-shadow:0 0 0 3px rgba(201,79,38,.22);
}
.status-line__meta{color:var(--gold-soft)}
.status-line__sep{color:rgba(143,167,158,.45)}
.status-line__num{color:var(--gold-soft)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(28,90,76,.55);overflow:hidden;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--peacock) 0%,var(--gold) 55%,var(--cinnabar) 100%);
  transition:width .12s linear;
}

/* ---------- layout utilities ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,4vw,32px)}
.wrap--narrow{max-width:820px}
.section{position:relative;padding:clamp(64px,9vw,112px) 0}
.section--paper{background:var(--paper);color:var(--ink-text)}
.section--sand{background:var(--sand);color:var(--ink-text)}
.section--pine{background:var(--pine);color:var(--paper)}
.section--peacock{background:var(--peacock);color:var(--paper)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--indigo{background:var(--indigo);color:var(--paper)}
.section--wine{background:var(--wine);color:var(--paper)}
.section--pine .lead,.section--peacock .lead,.section--ink .lead,
.section--indigo .lead,.section--wine .lead{color:rgba(243,236,224,.84)}
.section--pine .muted,.section--peacock .muted,.section--ink .muted,
.section--indigo .muted,.section--wine .muted{color:rgba(243,236,224,.6)}
.section--pine .eyebrow,.section--peacock .eyebrow,.section--ink .eyebrow,
.section--indigo .eyebrow,.section--wine .eyebrow{color:var(--gold)}

.band{display:flex;align-items:center;gap:14px;margin-bottom:26px}
.band__num{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.16em;
  color:var(--gold-deep);border:1px solid rgba(138,101,32,.45);
  border-radius:999px;padding:5px 12px;
}
.band__line{flex:1 1 auto;height:1px;background:linear-gradient(90deg,rgba(138,101,32,.5),transparent)}
.section--pine .band__num,.section--peacock .band__num,.section--ink .band__num,
.section--indigo .band__num,.section--wine .band__num{color:var(--gold);border-color:rgba(214,164,74,.5)}
.section--pine .band__line,.section--peacock .band__line,.section--ink .band__line,
.section--indigo .band__line,.section--wine .band__line{background:linear-gradient(90deg,rgba(214,164,74,.55),transparent)}

.grid{display:grid;gap:clamp(20px,3vw,38px)}
.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))}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:22px 0 0}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--mist);
}
.breadcrumb__list li+li::before{content:"/";margin-right:8px;color:rgba(143,167,158,.5)}
.breadcrumb__list a:hover{color:var(--gold)}
.breadcrumb__list [aria-current="page"]{color:var(--gold-soft)}
.breadcrumb--on-light .breadcrumb__list{color:#5C6E67}
.breadcrumb--on-light .breadcrumb__list [aria-current="page"]{color:var(--gold-deep)}

/* ---------- list / list rows ---------- */
.list{display:flex;flex-direction:column;gap:10px}
.list__item{
  position:relative;display:flex;align-items:flex-start;gap:16px;
  padding:18px 22px;border-radius:var(--radius-organic);
  background:rgba(228,217,198,.5);
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.list__item::after{
  content:"";position:absolute;top:0;right:0;width:0;height:0;
  border-top:16px solid var(--gold);border-left:16px solid transparent;
  border-radius:0 8px 0 0;opacity:0;transition:opacity .2s ease;
}
.list__item:hover{background:rgba(214,164,74,.18);transform:translateX(4px);box-shadow:0 10px 26px rgba(4,18,16,.08)}
.list__item:hover::after{opacity:.9}
.section--pine .list__item,.section--peacock .list__item,.section--ink .list__item,
.section--indigo .list__item,.section--wine .list__item{background:rgba(243,236,224,.08)}
.section--pine .list__item:hover,.section--peacock .list__item:hover,.section--ink .list__item:hover,
.section--indigo .list__item:hover,.section--wine .list__item:hover{background:rgba(214,164,74,.2)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  border:1px solid rgba(143,167,158,.5);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
}
.tag--gold{border-color:rgba(214,164,74,.6);color:var(--gold)}
.tag--cinnabar{border-color:rgba(201,79,38,.55);color:var(--cinnabar)}
.badge-num{
  display:inline-block;padding:3px 9px;border-radius:9px 3px 9px 3px;
  background:var(--gold);color:#22190A;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;
}

/* ---------- filter bar ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:16px 0;
}
.filter-bar__label{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--mist);margin-right:4px;
}
.filter-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;
  border:1px solid rgba(143,167,158,.45);
  font-size:14px;font-weight:500;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.filter-btn:hover{border-color:var(--gold);color:var(--gold-deep)}
.filter-btn[aria-pressed="true"]{background:var(--peacock);border-color:var(--peacock);color:var(--paper)}
.filter-btn__count{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;opacity:.75}
.filter-empty{
  display:none;padding:24px;border-radius:var(--radius-organic);
  background:rgba(228,217,198,.5);
  font-family:var(--font-mono);font-size:13px;color:var(--mist);
}
.filter-empty[data-visible]{display:block}

/* ---------- image frames ---------- */
.img-frame{
  position:relative;overflow:hidden;isolation:isolate;
  border-radius:var(--radius-organic);
  background:linear-gradient(150deg,var(--pine) 0%,var(--indigo) 58%,var(--wine) 100%);
}
.img-frame img{display:block;width:100%;height:100%;object-fit:cover}
.img-frame--wide{aspect-ratio:16/9}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--square{aspect-ratio:1/1}
.img-frame--window{
  aspect-ratio:16/10;border-radius:14px 14px 10px 10px;box-shadow:var(--shadow-deep);
}
.img-frame--window::before{
  content:"";position:absolute;top:0;left:0;right:0;height:26px;z-index:2;
  background:rgba(8,33,29,.86);
}
.img-frame--window::after{
  content:"";position:absolute;top:9px;left:12px;width:8px;height:8px;border-radius:50%;z-index:3;
  background:var(--cinnabar);
  box-shadow:14px 0 0 var(--gold),28px 0 0 var(--peacock);
}
.img-frame__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:3;
  padding:14px 16px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--gold-soft);
  background:linear-gradient(0deg,rgba(8,33,29,.9),transparent);
}

/* ---------- prose / flow ---------- */
.prose{max-width:68ch}
.prose p+p{margin-top:1.05em}
.prose h3{margin:1.6em 0 .5em}
.flow{display:flex;flex-wrap:wrap;gap:14px;counter-reset:step}
.flow__item{
  flex:1 1 200px;position:relative;padding:20px 22px;
  border-radius:var(--radius-organic);
  background:rgba(28,90,76,.14);
}
.flow__item::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  display:block;margin-bottom:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--gold-deep);
}
.section--pine .flow__item,.section--peacock .flow__item,.section--ink .flow__item,
.section--indigo .flow__item,.section--wine .flow__item{background:rgba(243,236,224,.08)}
.section--pine .flow__item::before,.section--peacock .flow__item::before,.section--ink .flow__item::before,
.section--indigo .flow__item::before,.section--wine .flow__item::before{color:var(--gold)}

/* ---------- reveal ---------- */
.js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .24s ease,transform .24s ease;
  transition-delay:var(--reveal-delay,0ms);
}
.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- footer ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#0B2C26 0%,#08211D 55%,#04120F 100%);
  color:var(--paper);
  padding-bottom:28px;
}
.footer__band{
  height:3px;
  background:linear-gradient(90deg,var(--gold) 0%,var(--peacock) 34%,var(--indigo) 62%,var(--wine) 82%,var(--cinnabar) 100%);
}
.footer__glow{
  position:absolute;top:-32%;right:-14%;width:min(560px,80vw);height:min(560px,80vw);
  border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(214,164,74,.2),transparent 65%);
}
.footer__inner{
  position:relative;z-index:1;
  max-width:var(--maxw);margin:0 auto;
  padding:clamp(48px,6vw,76px) clamp(16px,4vw,32px) 34px;
  display:grid;grid-template-columns:minmax(240px,1fr) minmax(0,2fr);
  gap:clamp(32px,5vw,72px);
}
.footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:16px;max-width:36ch}
.brand--footer .brand__name{font-size:19px}
.brand--footer .brand__mark{width:30px;height:30px}
.footer__tagline{font-size:15px;line-height:1.72;color:rgba(243,236,224,.78)}
.footer__chips{display:flex;flex-wrap:wrap;gap:8px}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  border:1px solid rgba(240,212,155,.4);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  color:var(--gold-soft);
  transition:background-color .18s ease,border-color .18s ease,transform .18s ease;
}
.to-top:hover{background:rgba(214,164,74,.16);border-color:var(--gold);transform:translateY(-2px)}
.footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.footer__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.16em;color:var(--gold);
}
.footer__list{display:flex;flex-direction:column;gap:10px}
.footer__list a{
  position:relative;display:inline-block;padding-left:14px;
  font-size:15px;color:rgba(243,236,224,.8);
  transition:color .18s ease;
}
.footer__list a::before{
  content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;border-radius:2px;
  background:var(--peacock);transition:background-color .18s ease,transform .18s ease;
}
.footer__list a:hover{color:var(--gold-soft)}
.footer__list a:hover::before{background:var(--gold);transform:translateX(2px)}
.footer__bottom{
  position:relative;z-index:1;
  max-width:var(--maxw);margin:0 auto;
  padding:22px clamp(16px,4vw,32px) 0;
  border-top:1px solid rgba(143,167,158,.22);
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px 32px;
}
.footer__contact-block{display:flex;flex-direction:column;gap:6px}
.footer__contact{font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;color:rgba(243,236,224,.74)}
.footer__addr{font-size:13px;color:rgba(243,236,224,.62)}
.footer__note{font-size:12px;color:rgba(143,167,158,.85)}
.footer__legal{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--mist)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .nav__link{padding:8px 9px;font-size:14px}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;margin:0;
    padding:10px clamp(14px,4vw,24px) 18px;
    background:linear-gradient(180deg,#0B2C26 0%,#08211D 100%);
    border-top:1px solid rgba(214,164,74,.22);
    border-bottom:1px solid rgba(214,164,74,.35);
    box-shadow:0 26px 44px rgba(0,0,0,.45);
  }
  .site-header[data-open] .nav{display:block}
  @media (prefers-reduced-motion: no-preference){
    .site-header[data-open] .nav{animation:navDrop .22s ease-out}
  }
  .nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav__link{
    display:block;padding:13px 8px;font-size:16px;border-radius:0;
    border-bottom:1px solid rgba(143,167,158,.18);
  }
  .nav__link::after{left:8px;right:auto;width:26px;bottom:9px}
  .nav__link:hover{background:rgba(28,90,76,.4)}
  .footer__inner{grid-template-columns:minmax(0,1fr)}
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--2{grid-template-columns:minmax(0,1fr)}
}
@keyframes navDrop{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:none}
}
@media (max-width:620px){
  :root{--header-h:88px}
  .brand__sub{display:none}
  .command-bar__inner{gap:10px}
  .btn--copy{padding:8px 12px;font-size:13px}
  .status-line{font-size:11px;letter-spacing:.04em;gap:8px}
  .footer__cols{grid-template-columns:minmax(0,1fr);gap:26px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .h-display{font-size:clamp(38px,11vw,64px)}
}
@media (max-width:400px){
  .status-line__sep{display:none}
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js [data-reveal]{opacity:1;transform:none}
}