/* ===== 经典主站 · 共享样式 /assets/site.css ===== */

:root{
  --ink:#0E1B33;
  --deep:#14315C;
  --brand:#1F4E8C;
  --gold:#C8952F;
  --gold-tint:#F0DFB8;
  --celadon:#3F7D6E;
  --brick:#A6402F;
  --paper:#F7F5F0;
  --white:#FFFFFF;
  --slate:#5A6473;
  --mist:#E3E6EA;
  --black:#0A0A0A;

  --font-display:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:var(--font-display);
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --shell:1320px;
  --gutter:24px;
  --header-h:74px;

  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;

  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-card:0 22px 48px -32px rgba(14,27,51,.55);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 14px}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0 0 12px;line-height:1.22;font-weight:800;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}

/* ---------- 骨架 ---------- */
.ck-shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 var(--gutter)}
.ck-main{display:block}
.ck-main--offset{padding-top:calc(var(--header-h) + 40px)}
.ck-rule{height:1px;background:var(--mist);border:0;margin:0}

/* ---------- 跳转链接 ---------- */
.ck-skip{
  position:absolute;left:16px;top:-80px;z-index:200;
  display:inline-block;padding:12px 22px;
  background:var(--gold);color:var(--ink);
  font-weight:700;font-size:15px;
  border-radius:0 0 var(--r-md) var(--r-md);
  transition:top .2s var(--ease);
}
.ck-skip:focus{top:0}

/* ---------- 页头 ---------- */
.ck-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  color:var(--white);
  background:linear-gradient(180deg,rgba(14,27,51,.92) 0%,rgba(14,27,51,.74) 100%);
  transition:background .35s var(--ease),box-shadow .35s var(--ease);
}
.ck-header[data-scrolled="true"]{
  background:var(--ink);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.9);
}
.ck-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(200,149,47,0),var(--gold),rgba(200,149,47,0));
  opacity:0;transition:opacity .35s var(--ease);
}
.ck-header[data-scrolled="true"]::after{opacity:1}

.ck-header__inner{
  display:flex;align-items:center;gap:26px;
  min-height:var(--header-h);
}

.ck-brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.ck-brand__word{
  font-family:var(--font-display);
  font-size:21px;font-weight:900;letter-spacing:-.02em;
  color:var(--white);white-space:nowrap;
}
.ck-brand__badge{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  padding:4px 10px;border-radius:var(--r-pill);
  color:var(--gold-tint);
  background:rgba(200,149,47,.14);
  border:1px solid rgba(200,149,47,.55);
  white-space:nowrap;
}

.ck-nav{flex:1 1 auto;display:flex;justify-content:center;align-items:center}
.ck-nav__list{display:flex;align-items:center;justify-content:center;gap:4px}
.ck-nav__item{display:block}
.ck-nav__link{
  display:inline-block;padding:8px 13px;
  font-size:15px;line-height:1.4;
  color:rgba(255,255,255,.76);
  border-radius:var(--r-pill);
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.ck-nav__link:hover{color:var(--white);background:rgba(255,255,255,.09)}
.ck-nav__link[aria-current="page"]{
  color:var(--gold-tint);
  background:rgba(200,149,47,.16);
  box-shadow:inset 0 0 0 1px rgba(200,149,47,.55);
}
.ck-nav__note{
  display:none;margin:0;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  color:rgba(227,230,234,.55);
}

.ck-header__actions{flex:0 0 auto;display:flex;align-items:center;gap:14px}
.ck-header__status{
  display:none;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--gold-tint);text-transform:uppercase;white-space:nowrap;
}

.ck-capsule{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-pill);
  background:var(--gold);color:var(--ink);
  font-size:14px;font-weight:700;letter-spacing:.02em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.ck-capsule:hover{background:var(--gold-tint);transform:translateY(-2px)}
.ck-capsule--ghost{
  background:transparent;color:var(--gold-tint);
  border-color:rgba(200,149,47,.6);
}
.ck-capsule--ghost:hover{background:rgba(200,149,47,.18);color:var(--white)}

.ck-navtoggle{
  display:none;align-items:center;gap:9px;flex:0 0 auto;
  padding:8px 14px;border-radius:var(--r-pill);
  color:var(--gold-tint);
  border:1px solid rgba(240,223,184,.42);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.ck-navtoggle:hover{border-color:var(--gold);background:rgba(200,149,47,.14)}
.ck-navtoggle__bars{
  position:relative;display:block;width:16px;height:2px;
  background:currentColor;border-radius:2px;
  transition:background .25s var(--ease);
}
.ck-navtoggle__bars::before,
.ck-navtoggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;
  background:currentColor;border-radius:2px;
  transition:transform .25s var(--ease),top .25s var(--ease);
}
.ck-navtoggle__bars::before{top:-5px}
.ck-navtoggle__bars::after{top:5px}
.ck-navtoggle[aria-expanded="true"] .ck-navtoggle__bars{background:transparent}
.ck-navtoggle[aria-expanded="true"] .ck-navtoggle__bars::before{top:0;transform:rotate(45deg)}
.ck-navtoggle[aria-expanded="true"] .ck-navtoggle__bars::after{top:0;transform:rotate(-45deg)}
.ck-navtoggle__text{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em}

.ck-header__progress{
  position:absolute;left:0;bottom:0;z-index:2;
  display:block;width:100%;height:2px;
  background:linear-gradient(90deg,var(--gold),var(--gold-tint));
  transform:scaleX(0);transform-origin:0 50%;
}

.ck-mobilebar{
  position:fixed;left:0;right:0;bottom:0;z-index:88;
  display:none;align-items:center;justify-content:space-between;gap:12px;
  padding:10px var(--gutter);
  background:rgba(14,27,51,.97);
  border-top:1px solid rgba(200,149,47,.45);
}
.ck-mobilebar__mark{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--gold-tint);
}
.ck-mobilebar .ck-capsule{padding:9px 18px;font-size:14px}

/* ---------- 页脚 ---------- */
.ck-footer{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--mist);
  border-top:1px solid var(--gold);
}
.ck-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.65;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
}
.ck-footer>.ck-shell{position:relative;z-index:1}

.ck-footer__grid{
  display:grid;
  grid-template-columns:1.35fr 1fr 1.6fr 1.4fr;
  gap:40px;
  padding:64px 0 44px;
}
.ck-footer__col{min-width:0}
.ck-footer__title{
  margin:0 0 16px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--gold);
}
.ck-footer__word{
  margin:0 0 10px;
  font-size:26px;font-weight:900;letter-spacing:-.02em;color:var(--white);
}
.ck-footer__desc{
  margin:0 0 16px;max-width:34ch;
  font-size:14px;line-height:1.8;color:rgba(227,230,234,.72);
}
.ck-footer__icp{
  margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:rgba(227,230,234,.5);
}
.ck-footer__list{display:grid;gap:10px}
.ck-footer__link{
  display:inline-block;font-size:15px;
  color:rgba(227,230,234,.8);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.ck-footer__link:hover{color:var(--gold-tint);transform:translateX(3px)}

.ck-cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.ck-cat{
  display:flex;align-items:center;justify-content:center;
  padding:9px 4px;border-radius:var(--r-sm);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--gold-tint);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.ck-cat:hover{transform:translateY(-2px);border-color:var(--gold);background:rgba(200,149,47,.18)}
.ck-cat--a{background:rgba(31,78,140,.34);border-color:rgba(31,78,140,.95);color:#BBD3F2}
.ck-cat--b{background:rgba(63,125,110,.32);border-color:rgba(63,125,110,.95);color:#B3DBCE}
.ck-cat--c{background:rgba(166,64,47,.32);border-color:rgba(166,64,47,.95);color:#EFBFB3}
.ck-cat--a:hover{background:rgba(31,78,140,.55)}
.ck-cat--b:hover{background:rgba(63,125,110,.5)}
.ck-cat--c:hover{background:rgba(166,64,47,.5)}

.ck-contact{display:grid;gap:14px}
.ck-contact__item{display:grid;gap:2px;min-width:0}
.ck-contact__label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--gold);
}
.ck-contact__value{font-size:15px;color:var(--white);word-break:break-word}
.ck-contact__value--mono{font-family:var(--font-mono);letter-spacing:.02em}
.ck-footer__note{
  margin:16px 0 0;font-size:13px;line-height:1.7;
  color:rgba(227,230,234,.6);
}

.ck-footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 0 28px;
  border-top:1px solid rgba(227,230,234,.14);
}
.ck-footer__legal{margin:0;font-size:13px;color:rgba(227,230,234,.6)}
.ck-footer__links{display:flex;flex-wrap:wrap;gap:20px}
.ck-footer__links a{
  font-size:13px;color:rgba(227,230,234,.75);
  transition:color .2s var(--ease);
}
.ck-footer__links a:hover{color:var(--gold-tint)}

/* ---------- 通用排版 ---------- */
.ck-eyebrow{
  display:block;margin:0 0 12px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--gold);
  transition:color .3s var(--ease);
}
.ck-display{
  margin:0;
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(42px,8vw,88px);line-height:1.03;letter-spacing:-.02em;
  color:var(--black);
}
.ck-h2{font-size:clamp(24px,3.2vw,36px);letter-spacing:-.01em}
.ck-h3{font-size:20px}
.ck-lead{
  margin:0 0 18px;max-width:46ch;
  font-size:clamp(17px,2vw,20px);line-height:1.7;color:var(--deep);
}
.ck-text{margin:0 0 14px;max-width:64ch;font-size:17px;line-height:1.75;color:var(--slate)}
.ck-mono{font-family:var(--font-mono);letter-spacing:.02em}
.ck-num{font-family:var(--font-mono);font-weight:700;color:var(--gold)}

/* ---------- 通用组件 ---------- */
.ck-btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:var(--r-pill);
  background:var(--brand);color:var(--white);
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.ck-btn:hover{background:var(--deep);transform:translateY(-2px)}
.ck-btn--gold{background:var(--gold);color:var(--ink)}
.ck-btn--gold:hover{background:var(--gold-tint)}
.ck-btn--outline{background:transparent;color:var(--deep);border-color:var(--mist)}
.ck-btn--outline:hover{border-color:var(--gold);color:var(--ink);background:rgba(200,149,47,.1)}

.ck-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  background:var(--gold-tint);color:#6B4E12;
  border:1px solid rgba(200,149,47,.4);
}
.ck-tag--celadon{background:rgba(63,125,110,.14);color:var(--celadon);border-color:rgba(63,125,110,.35)}
.ck-tag--brick{background:rgba(166,64,47,.12);color:var(--brick);border-color:rgba(166,64,47,.32)}
.ck-tag--ink{background:rgba(14,27,51,.07);color:var(--ink);border-color:rgba(14,27,51,.18)}

.ck-card{
  background:var(--white);
  border:1px solid var(--mist);
  border-radius:var(--r-lg);
  padding:28px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.ck-card:hover{transform:translateY(-2px);border-color:rgba(200,149,47,.65);box-shadow:var(--shadow-card)}
.ck-card__title{margin:0 0 8px;font-size:19px;font-weight:700}
.ck-card__meta{margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--slate)}

.ck-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;
  padding:16px 0;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--slate);
}
.ck-breadcrumb li:not(:last-child)::after{content:"/";margin:0 8px;color:var(--mist)}

/* ---------- 网格与区块 ---------- */
.ck-section{padding:72px 0;position:relative}
.ck-section--tight{padding:40px 0}
.ck-section--ink{background:var(--ink);color:var(--white)}
.ck-section--ink .ck-text{color:rgba(227,230,234,.78)}
.ck-section--ink .ck-h2,
.ck-section--ink .ck-h3{color:var(--white)}
[data-section].is-current .ck-eyebrow{color:var(--brand)}
[data-section].is-current{cursor:default}

.ck-grid{display:grid;gap:24px}
.ck-grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.ck-grid--9-3{grid-template-columns:minmax(0,9fr) minmax(0,3fr)}
.ck-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 图片容器基础规则 ---------- */
.ck-media{
  position:relative;overflow:hidden;
  width:100%;aspect-ratio:4/3;
  border-radius:var(--r-lg);
  background:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px) 0 0/32px 32px,
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px) 0 0/32px 32px,
    linear-gradient(140deg,var(--deep),var(--ink));
  box-shadow:inset 0 0 0 1px rgba(200,149,47,.28);
}
.ck-media>img{width:100%;height:100%;object-fit:cover;border-radius:inherit}
.ck-media--wide{aspect-ratio:16/9}
.ck-media--tall{aspect-ratio:3/4}
.ck-media--square{aspect-ratio:1/1}
.ck-media__caption{
  position:absolute;left:0;right:0;bottom:0;
  margin:0;padding:14px 18px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--gold-tint);
  background:linear-gradient(0deg,rgba(14,27,51,.88),rgba(14,27,51,0));
}

/* ---------- 显现动效 ---------- */
html.ck-js [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
html.ck-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  .ck-header__inner{justify-content:space-between;gap:12px}
  .ck-nav{
    position:fixed;top:var(--header-h);left:0;right:0;bottom:0;z-index:5;
    display:flex;flex-direction:column;justify-content:flex-start;gap:22px;
    padding:24px var(--gutter) 100px;
    background:var(--ink);
    border-top:1px solid rgba(200,149,47,.42);
    overflow-y:auto;
    transform:translateX(100%);opacity:0;visibility:hidden;
    transition:transform .38s var(--ease),opacity .3s var(--ease),visibility .38s var(--ease);
  }
  .ck-nav[data-open="true"]{transform:translateX(0);opacity:1;visibility:visible}
  .ck-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .ck-nav__item{border-bottom:1px solid rgba(227,230,234,.12)}
  .ck-nav__link{
    display:block;padding:16px 6px;font-size:19px;
    color:rgba(255,255,255,.86);border-radius:12px;
  }
  .ck-nav__link:hover{background:transparent;color:var(--white)}
  .ck-nav__link[aria-current="page"]{
    color:var(--gold-tint);border-radius:0;
    background:linear-gradient(90deg,rgba(200,149,47,.22),rgba(200,149,47,0));
    box-shadow:none;
  }
  .ck-nav__note{display:block}
  .ck-header__actions{display:none}
  .ck-navtoggle{display:inline-flex}
  .ck-mobilebar{display:flex}
  body{padding-bottom:62px}
}

/* ---------- 窄屏 ---------- */
@media (max-width:900px){
  .ck-section{padding:56px 0}
  .ck-grid--8-4,
  .ck-grid--9-3,
  .ck-grid--3{grid-template-columns:minmax(0,1fr)}
  .ck-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px;padding:48px 0 32px}
}

@media (max-width:620px){
  :root{--gutter:18px;--header-h:66px}
  body{font-size:16px}
  .ck-brand__word{font-size:19px}
  .ck-brand__badge{display:none}
  .ck-footer__grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .ck-cat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .ck-footer__base{flex-direction:column;align-items:flex-start;gap:12px}
  .ck-footer__links{gap:16px}
  .ck-mobilebar__mark{display:none}
  .ck-mobilebar .ck-capsule{width:100%;justify-content:center}
  .ck-card{padding:22px}
}

@media (min-width:1200px){
  .ck-header__status:not(:empty){display:inline-block}
}

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