/* ============================================================
   九博国际会馆 / site.css  —  共享外壳样式
   夜幕江岸 · 光学透镜 · 坐标命令栏
   ============================================================ */

/* ---------- 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,ul,ol,li,figure,figcaption,blockquote,dl,dd,hr{margin:0;padding:0}
ul,ol{list-style:none}
img,picture,svg,video{display:block;max-width:100%}
img{height:auto}
button{background:none;border:0;cursor:pointer;font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
main{display:block}
#main-content{scroll-margin-top:96px}

/* ---------- tokens ---------- */
:root{
  --ink:#0B1A2E;
  --ink-2:#12263D;
  --ink-3:#1B3557;
  --gold:#C9A227;
  --amber:#F2A93B;
  --jade:#4FB3A6;
  --silver:#C7D2DC;
  --stone:#F5F1E8;
  --slate:#8593A1;
  --moss:#7C8B62;
  --clay:#B4694E;

  --line:rgba(199,210,220,.16);
  --line-strong:rgba(199,210,220,.34);
  --glow-amber:rgba(242,169,59,.22);
  --glow-jade:rgba(79,179,166,.18);

  --font-cond:"Source Han Sans SC","HarmonyOS Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","IBM Plex Mono",SFMono-Regular,Menlo,Consolas,monospace;

  --w-max:1240px;
  --w-text:38em;
  --pad-x:clamp(16px,4vw,40px);
  --radius:16px;
  --radius-lg:26px;
}

/* ---------- base ---------- */
body{
  font-family:var(--font-body);
  font-size:clamp(16px,1.05vw,17px);
  line-height:1.75;
  color:var(--silver);
  background-color:var(--ink);
  background-image:
    radial-gradient(58rem 38rem at 10% -12%, rgba(27,53,87,.92), rgba(11,26,46,0) 62%),
    radial-gradient(46rem 30rem at 92% 4%, rgba(79,179,166,.10), rgba(11,26,46,0) 64%),
    radial-gradient(40rem 28rem at 48% 118%, rgba(201,162,39,.12), rgba(11,26,46,0) 62%);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-cond);letter-spacing:.04em;color:var(--stone);line-height:1.18}
.display,h1{font-size:clamp(2.6rem,7vw,5.2rem);line-height:1.04;font-weight:700;letter-spacing:.04em}
.h2,h2{font-size:clamp(1.6rem,3.2vw,2.5rem);font-weight:600}
.h3,h3{font-size:clamp(1.12rem,2vw,1.45rem);color:var(--silver);font-weight:600}
p{text-wrap:pretty}
strong{color:var(--stone);font-weight:600}
code,kbd{font-family:var(--font-mono);font-size:.9em;color:var(--gold)}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:4px}

/* ---------- 版心 / 分节 ---------- */
.container{width:100%;max-width:var(--w-max);margin-inline:auto;padding-inline:var(--pad-x)}
.section{padding-block:clamp(48px,7vw,96px)}
.section--tint{background:linear-gradient(180deg, rgba(18,38,61,.92), rgba(11,26,46,.15))}
.section--deep{background:var(--ink-2)}
.section__head{max-width:var(--w-text);margin-bottom:clamp(20px,3vw,38px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  color:var(--gold);margin-bottom:14px;
}
.eyebrow::before{content:"";width:28px;height:1px;background:linear-gradient(90deg,var(--amber),rgba(201,162,39,0))}
.lede{font-size:clamp(1rem,1.5vw,1.12rem);color:var(--silver);max-width:var(--w-text)}
.prose{max-width:var(--w-text);color:var(--silver)}
.prose p+p{margin-top:1em}
.rule{height:1px;border:0;background:linear-gradient(90deg, rgba(201,162,39,.75), rgba(201,162,39,0));margin-block:clamp(24px,4vw,48px)}
.tickrule{
  height:12px;
  background-image:repeating-linear-gradient(90deg, rgba(199,210,220,.38) 0 1px, transparent 1px 18px);
  -webkit-mask-image:linear-gradient(90deg,#000,rgba(0,0,0,0));
  mask-image:linear-gradient(90deg,#000,rgba(0,0,0,0));
}
.stack{display:grid;gap:clamp(12px,2vw,20px)}
.grid{display:grid;gap:clamp(18px,3vw,32px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

/* ---------- 展签 / 标签 ---------- */
.plate{
  position:relative;
  padding:20px 22px 22px;
  border-radius:var(--radius);
  background:linear-gradient(158deg, rgba(27,53,87,.72), rgba(18,38,61,.46));
}
.plate::before{
  content:"";position:absolute;left:22px;top:0;width:34px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--gold),rgba(201,162,39,0));
}
.plate__title{font-family:var(--font-cond);font-size:1.1rem;letter-spacing:.05em;color:var(--stone);margin-bottom:8px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  padding:4px 10px;border-radius:999px;
  background:rgba(124,139,98,.18);color:#C8D3AC;
}
.tag--moss{background:rgba(124,139,98,.18);color:#C8D3AC}
.tag--clay{background:rgba(180,105,78,.18);color:#E5B3A2}
.tag--jade{background:rgba(79,179,166,.16);color:#B6E6DE}
.tag--amber{background:rgba(242,169,59,.16);color:#F7CE8B}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;
  font-size:.92rem;letter-spacing:.04em;line-height:1.2;
  transition:transform .2s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
}
.btn--amber{
  background:linear-gradient(180deg,#F5B14F,#DE9421);color:#16233A;font-weight:600;
  box-shadow:0 10px 30px var(--glow-amber), inset 0 0 0 1px rgba(255,255,255,.18);
}
.btn--amber:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(242,169,59,.32)}
.btn--jade{
  background:rgba(79,179,166,.14);color:#C4EDE7;
  box-shadow:inset 0 0 0 1px rgba(79,179,166,.5);
}
.btn--jade:hover{background:rgba(79,179,166,.24);color:#E6FBF7}
.btn--ghost{background:transparent;color:var(--silver);box-shadow:inset 0 0 0 1px var(--line-strong)}
.btn--ghost:hover{color:var(--stone);box-shadow:inset 0 0 0 1px rgba(242,169,59,.6)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--slate);padding-block:14px 4px;
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item+.breadcrumb__item::before{content:"/";color:rgba(133,147,161,.55)}
.breadcrumb__item a{transition:color .2s ease}
.breadcrumb__item a:hover{color:var(--gold)}

/* ---------- 图片容器（供页面阶段置入图片） ---------- */
.media-frame{
  position:relative;display:block;width:100%;overflow:hidden;
  border-radius:var(--radius-lg);aspect-ratio:16/9;
  background:linear-gradient(150deg,#1B3557,#12263D 58%,#0B1A2E);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(58% 58% at 72% 18%, rgba(242,169,59,.16), rgba(242,169,59,0) 72%);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame__caption{display:block;margin-top:10px;font-size:12px;letter-spacing:.06em;color:var(--slate)}

/* ---------- 提示条 / 数字 ---------- */
.notice{
  padding:16px 18px;border-radius:0 12px 12px 0;font-size:.92rem;color:var(--silver);
  background:rgba(242,169,59,.09);border-left:2px solid var(--amber);
}
.notice--jade{background:rgba(79,179,166,.09);border-left-color:var(--jade)}
.notice--clay{background:rgba(180,105,78,.1);border-left-color:var(--clay)}
.stat{display:flex;flex-direction:column;gap:4px}
.stat__num{font-family:var(--font-mono);font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.1;color:var(--amber)}
.stat__label{font-size:12px;letter-spacing:.14em;color:var(--slate)}

/* ---------- 工具类 ---------- */
.u-visually-hidden{
  position:absolute!important;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;
}
.skip-link{
  position:absolute;left:var(--pad-x);top:6px;z-index:120;
  padding:10px 16px;border-radius:999px;
  background:var(--amber);color:#16233A;font-size:.85rem;font-weight:600;
  transform:translateY(-160%);transition:transform .2s ease;
}
.skip-link:focus-visible{transform:translateY(0);outline-offset:2px}

/* ============================================================
   头部：坐标命令栏
   ============================================================ */
.cmdbar{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg, rgba(11,26,46,.97), rgba(11,26,46,.86));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.cmdbar__rail{
  position:absolute;left:0;right:0;bottom:0;height:9px;pointer-events:none;opacity:.45;
  background-image:repeating-linear-gradient(90deg, rgba(201,162,39,.55) 0 1px, transparent 1px 26px);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent);
}
.cmdbar__progress{
  position:absolute;left:0;bottom:0;width:100%;height:2px;pointer-events:none;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--amber),var(--gold));
  box-shadow:0 0 12px rgba(242,169,59,.5);
  transition:transform .18s linear;
}
.cmdbar__inner{
  position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;
  gap:clamp(12px,2.2vw,30px);
  max-width:var(--w-max);margin-inline:auto;
  min-height:66px;padding:10px var(--pad-x) 12px;
}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:10px;padding:4px 2px;border-radius:12px;flex:0 0 auto}
.brand__lens{
  position:relative;flex:0 0 30px;width:30px;height:30px;border-radius:50%;
  background:
    radial-gradient(circle at 50% 50%, rgba(242,169,59,.95) 0 16%, rgba(242,169,59,0) 17%),
    radial-gradient(circle at 50% 50%, rgba(201,162,39,.5) 0 30%, rgba(201,162,39,0) 31%),
    radial-gradient(circle at 50% 50%, rgba(79,179,166,.5) 0 44%, rgba(79,179,166,0) 45%);
  box-shadow:inset 0 0 0 1px rgba(201,162,39,.5), 0 0 18px rgba(242,169,59,.22);
}
.brand__lens::after{content:"";position:absolute;inset:43%;border-radius:50%;background:var(--stone);opacity:.85}
.brand__text{display:flex;flex-direction:column;line-height:1.16}
.brand__name{font-family:var(--font-cond);font-size:1.06rem;font-weight:600;letter-spacing:.12em;color:var(--stone)}
.brand__tagline{font-size:10px;letter-spacing:.22em;color:var(--gold);opacity:.9}

/* 导航 */
.nav{justify-self:center}
.nav__list{display:flex;align-items:center;gap:2px;flex-wrap:wrap;justify-content:center}
.nav__item{display:block}
.nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:9px 11px 11px;border-radius:10px;
  color:var(--silver);font-size:.92rem;letter-spacing:.02em;
  transition:color .2s ease, background-color .2s ease;
}
.nav__index{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--slate)}
.nav__link::after{
  content:"";position:absolute;left:11px;right:11px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--amber),var(--gold));
  transform:scaleX(0);transform-origin:0 50%;transition:transform .28s ease;
}
.nav__link:hover{color:var(--stone);background:rgba(199,210,220,.07)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{
  color:var(--stone);
  background:linear-gradient(180deg, rgba(201,162,39,.14), rgba(201,162,39,0));
}
.nav__link[aria-current="page"] .nav__index{color:var(--amber)}
.nav__link[aria-current="page"]::after{transform:scaleX(1)}

/* 快捷入口 */
.quickbar{display:flex;align-items:center;gap:8px;justify-self:end}
.quick{
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  padding:9px 16px;border-radius:999px;
  font-size:.84rem;letter-spacing:.04em;
  transition:transform .2s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
}
.quick--amber{
  background:linear-gradient(180deg,#F5B14F,#DE9421);color:#16233A;font-weight:600;
  box-shadow:0 6px 22px var(--glow-amber), inset 0 0 0 1px rgba(255,255,255,.18);
}
.quick--amber:hover{transform:translateY(-1px);box-shadow:0 10px 28px rgba(242,169,59,.34)}
.quick--jade{background:rgba(79,179,166,.12);color:#B6E6DE;box-shadow:inset 0 0 0 1px rgba(79,179,166,.45)}
.quick--jade:hover{background:rgba(79,179,166,.24);color:#E6FBF7}

/* 移动按钮 */
.navtoggle{
  display:none;align-items:center;gap:9px;
  padding:9px 13px;border-radius:12px;
  background:rgba(199,210,220,.07);color:var(--stone);
  border:1px solid var(--line-strong);
  transition:background-color .2s ease, border-color .2s ease;
}
.navtoggle:hover{background:rgba(199,210,220,.13);border-color:rgba(242,169,59,.5)}
.navtoggle__bars{position:relative;display:block;width:18px;height:12px;flex:0 0 18px}
.navtoggle__bars::before,.navtoggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;border-radius:2px;
  background:currentColor;transition:transform .25s ease;
}
.navtoggle__bars::before{top:0}
.navtoggle__bars::after{bottom:0}
.navtoggle[aria-expanded="true"] .navtoggle__bars::before{transform:translateY(5px) rotate(45deg)}
.navtoggle[aria-expanded="true"] .navtoggle__bars::after{transform:translateY(-5px) rotate(-45deg)}
.navtoggle__text{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em}

/* ============================================================
   页脚
   ============================================================ */
.sitefoot{
  position:relative;margin-top:clamp(48px,8vw,110px);
  background:linear-gradient(180deg, rgba(18,38,61,.5), rgba(11,26,46,1) 70%);
  border-top:1px solid var(--line);
}
.footcoord{
  height:26px;opacity:.4;
  background-image:repeating-linear-gradient(90deg, rgba(201,162,39,.5) 0 1px, transparent 1px 22px);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 18%,#000 82%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 18%,#000 82%,transparent);
}
.sitefoot__top{
  display:grid;grid-template-columns:minmax(230px,1fr) minmax(300px,1.35fr);
  gap:clamp(20px,4vw,56px);align-items:start;
  padding-block:clamp(32px,5vw,58px);
}
.footbrand__name{font-family:var(--font-cond);font-size:clamp(1.6rem,3vw,2.2rem);letter-spacing:.1em;color:var(--stone)}
.footbrand__line{margin-top:8px;font-size:.92rem;letter-spacing:.18em;color:var(--gold)}
.footbrand__coords{margin-top:14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--slate)}

.footsteps{border-radius:var(--radius);padding:18px 20px 20px;background:rgba(27,53,87,.45)}
.footsteps__title{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--jade);margin-bottom:12px}
.footsteps__list{display:grid;gap:6px}
.footsteps__item a{
  display:flex;align-items:baseline;gap:12px;
  padding:9px 12px;border-radius:10px;
  color:var(--silver);font-size:.92rem;
  transition:background-color .2s ease, color .2s ease;
}
.footsteps__item a:hover{background:rgba(79,179,166,.13);color:var(--stone)}
.footsteps__num{font-family:var(--font-mono);font-size:11px;color:var(--jade);flex:0 0 auto}

.footcols{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  gap:clamp(20px,3vw,40px);
  padding-block:clamp(28px,4vw,48px);
  border-top:1px solid var(--line);
}
.footcol__title{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--gold);margin-bottom:14px;font-weight:400}
.footcol__list{display:grid;gap:9px}
.footcol__item{font-size:.9rem;line-height:1.65;color:var(--slate)}
.footcol__item a{color:var(--silver);border-bottom:1px solid transparent;transition:color .2s ease, border-color .2s ease}
.footcol__item a:hover{color:var(--stone);border-bottom-color:var(--gold)}
.footcol__item--contact{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.fieldval{font-family:var(--font-mono);font-size:.82rem;letter-spacing:.02em;color:var(--stone);word-break:break-all}
.copybtn{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;
  background:rgba(199,210,220,.08);color:var(--slate);
  border:1px solid var(--line);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  transition:color .2s ease, background-color .2s ease, border-color .2s ease;
}
.copybtn:hover{color:var(--stone);border-color:rgba(242,169,59,.55)}
.copybtn[data-copied="true"]{background:var(--jade);color:#0B1A2E;border-color:var(--jade)}

.footlegal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-block:20px 30px;border-top:1px solid var(--line);
  font-size:12px;color:var(--slate);
}
.footlegal__note{max-width:56ch;line-height:1.7}
.footlegal__copy{font-family:var(--font-mono);letter-spacing:.06em}
.footlegal__icp{font-family:var(--font-mono);letter-spacing:.06em}

/* ============================================================
   动效协议
   ============================================================ */
@keyframes riseIn{
  from{opacity:0;transform:translateY(16px)}
  to{opacity:1;transform:none}
}
[data-reveal].is-visible{animation:riseIn .6s cubic-bezier(.22,.7,.3,1) both}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .brand__tagline{display:none}
  .nav__link{padding:9px 8px 11px;font-size:.86rem}
  .nav__link::after{left:8px;right:8px}
  .quick{padding:8px 12px;font-size:.8rem}
}
@media (max-width:940px){
  .cmdbar__inner{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
    gap:8px;padding-block:10px;
  }
  .brand{order:1;min-width:0}
  .navtoggle{display:inline-flex;order:2}
  .nav,.quickbar{
    order:3;flex:1 1 100%;
    max-height:0;opacity:0;visibility:hidden;overflow:hidden;
    transition:max-height .35s ease, opacity .25s ease, visibility .25s ease;
  }
  .quickbar{order:4;justify-content:flex-start;flex-wrap:wrap;justify-self:stretch}
  .cmdbar[data-open] .nav,
  .cmdbar[data-open] .quickbar{max-height:70vh;opacity:1;visibility:visible}
  .nav__list{
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;margin-top:8px;padding-top:6px;border-top:1px solid var(--line);
  }
  .nav__item{width:100%}
  .nav__link{width:100%;justify-content:flex-start;padding:12px 4px;font-size:1rem;border-radius:8px}
  .nav__link::after{left:4px;right:4px;bottom:7px}
  .nav__index{width:22px;flex:0 0 22px}
  .quickbar{padding-bottom:6px;gap:10px}
  .quick{padding:10px 16px;font-size:.86rem}
}
@media (max-width:760px){
  .sitefoot__top{grid-template-columns:1fr}
  .footcols{grid-template-columns:1fr 1fr}
  .footlegal{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:460px){
  .footcols{grid-template-columns:1fr}
  .brand__name{font-size:.98rem;letter-spacing:.08em}
  .navtoggle__text{display:none}
}

/* ============================================================
   降低动态效果
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  [data-reveal].is-visible{animation:none}
  .cmdbar__progress{transition:none}
  .skip-link{transition:none}
}