/* ============================================================
   博雅棋牌局 · 共享外壳样式
   ============================================================ */

:root{
  --frost:#F3F7F4;
  --ice:#E1E9E5;
  --ink:#111614;
  --pine:#1E5B53;
  --deep:#082824;
  --cinnabar:#B7352A;
  --cinnabar-d:#9C2C23;
  --gold:#8A6428;
  --gold-l:#C9A45C;
  --jade-light:#8FB7AC;
  --mist:#556864;
  --glass:rgba(255,255,255,.68);
  --paper:#FBFDFB;

  --font-display:"Source Han Serif SC","Noto Serif SC",serif;
  --font-head:"Source Han Sans SC","Noto Sans SC",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","SFMono-Regular",monospace;

  --cmd-h:62px;
  --wrap:1240px;
  --gutter:clamp(16px,4vw,40px);
  --dur:190ms;
  --ease:cubic-bezier(.22,.68,.28,1);
  --radius:2px;
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--cmd-h) + 18px);
}

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;text-decoration:none}

table{border-collapse:collapse}

[hidden]{display:none !important}

/* ---------- 基础排版 ---------- */
body{
  background:var(--frost);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:clamp(16px,1.02vw,17.5px);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-head);
  font-weight:700;
  line-height:1.24;
  letter-spacing:.02em;
  color:var(--ink);
}

p{text-wrap:pretty}

.display{
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:.045em;
  line-height:1.14;
}

strong,b{font-weight:700}

::selection{background:rgba(30,91,83,.18);color:var(--ink)}

/* ---------- 无障碍 ---------- */
.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;
}

:focus-visible{
  outline:2px solid var(--cinnabar);
  outline-offset:2px;
  border-radius:1px;
}

.cmdbar :focus-visible{outline-color:#F2A79E}
.site-foot :focus-visible{outline-color:var(--gold-l)}

#main-content:focus-visible{outline:none}

.skip-link{
  position:absolute;
  left:var(--gutter);
  top:-120px;
  z-index:140;
  padding:10px 18px;
  background:var(--cinnabar);
  color:#fff;
  font-family:var(--font-head);
  font-size:14px;
  letter-spacing:.06em;
  border-radius:0 0 var(--radius) var(--radius);
  transition:top 150ms var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible{top:0}

/* ---------- 容器与网格 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.grid{
  display:grid;
  gap:var(--gap,clamp(16px,2.2vw,28px));
}

.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 通用元件 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.2em;
  color:var(--gold);
}

.eyebrow::before{
  content:"";
  width:20px;
  height:1px;
  background:var(--gold);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid rgba(138,100,40,.38);
  background:rgba(138,100,40,.06);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.1em;
  border-radius:var(--radius);
}

.note{
  border-left:2px solid var(--pine);
  padding:2px 0 2px 15px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--mist);
}

.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:2px;
  padding-block:18px 0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--mist);
}

.crumbs__item{
  display:inline-flex;
  align-items:center;
  gap:8px;
}

.crumbs__item + .crumbs__item::before{
  content:"/";
  color:rgba(85,104,100,.45);
}

.crumbs a{
  color:var(--mist);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}

.crumbs a:hover{
  color:var(--pine);
  border-bottom-color:var(--pine);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-head);
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.06em;
  text-align:center;
  cursor:pointer;
  transition:background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             color var(--dur) var(--ease),
             transform var(--dur) var(--ease);
}

.btn--primary{
  background:var(--cinnabar);
  border-color:var(--cinnabar);
  color:#fff;
}

.btn--primary:hover{
  background:var(--cinnabar-d);
  border-color:var(--cinnabar-d);
  transform:translateY(-1px);
}

.btn--pine{
  background:var(--pine);
  border-color:var(--pine);
  color:#fff;
}

.btn--pine:hover{
  background:var(--deep);
  border-color:var(--deep);
  transform:translateY(-1px);
}

.btn--ghost{
  background:transparent;
  border-color:rgba(17,22,20,.34);
  color:var(--ink);
}

.btn--ghost:hover{
  background:var(--ice);
  border-color:var(--ink);
}

.btn--sm{
  min-height:36px;
  padding:0 15px;
  font-size:13px;
}

/* ---------- 数据表 ---------- */
.data-table{
  width:100%;
  font-family:var(--font-mono);
  font-size:13.5px;
  font-variant-numeric:tabular-nums;
}

.data-table thead th{
  padding:10px 12px;
  text-align:left;
  font-weight:500;
  font-size:11px;
  letter-spacing:.14em;
  color:var(--mist);
  border-bottom:1px solid rgba(17,22,20,.3);
  white-space:nowrap;
}

.data-table td{
  padding:12px;
  border-bottom:1px solid rgba(17,22,20,.1);
  vertical-align:top;
}

.data-table tbody tr{
  transition:background-color var(--dur) var(--ease);
}

.data-table tbody tr:hover,
.data-table tbody tr:focus-within{
  background:var(--ice);
}

/* ---------- 图片容器基础规则 ---------- */
.img-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--ink);
  background:var(--ice);
  aspect-ratio:16 / 10;
}

.img-frame::after{
  content:"";
  position:absolute;
  inset:6px;
  border:1px solid rgba(243,247,244,.42);
  pointer-events:none;
}

.img-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.img-frame--wide{aspect-ratio:21 / 9}
.img-frame--tall{aspect-ratio:3 / 4}
.img-frame--square{aspect-ratio:1 / 1}

.img-frame__cap{
  position:absolute;
  left:0;
  bottom:0;
  max-width:100%;
  padding:7px 12px;
  background:rgba(8,40,36,.82);
  color:rgba(243,247,244,.92);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
}

/* ============================================================
   命令栏 / 头部
   ============================================================ */
.cmdbar{
  position:sticky;
  top:0;
  z-index:90;
  background:linear-gradient(180deg,rgba(8,40,36,.985),rgba(8,40,36,.945));
  color:#EAF3EF;
  border-bottom:1px solid rgba(143,183,172,.28);
  -webkit-backdrop-filter:blur(12px) saturate(1.1);
  backdrop-filter:blur(12px) saturate(1.1);
  transition:box-shadow var(--dur) var(--ease);
}

.cmdbar[data-scrolled]{
  box-shadow:0 16px 34px -26px rgba(8,40,36,.95);
}

.cmdbar__inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.8vw,26px);
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
  min-height:var(--cmd-h);
}

/* 品牌 */
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  padding-block:6px;
}

.brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  flex:0 0 auto;
  background:rgba(30,91,83,.72);
  border:1px solid rgba(143,183,172,.55);
  box-shadow:inset 0 0 0 1px rgba(8,40,36,.55);
  color:#F3F7F4;
  font-family:var(--font-display);
  font-size:17px;
  line-height:1;
  letter-spacing:0;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}

.brand__mark::after{
  content:"";
  position:absolute;
  top:3px;
  right:3px;
  width:4px;
  height:4px;
  background:var(--gold-l);
}

.brand:hover .brand__mark{
  background:rgba(30,91,83,1);
  border-color:rgba(201,164,92,.85);
}

.brand__text{
  display:flex;
  flex-direction:column;
  gap:1px;
  line-height:1.18;
}

.brand__name{
  font-family:var(--font-head);
  font-weight:700;
  font-size:15.5px;
  letter-spacing:.09em;
  color:#F3F7F4;
}

.brand__meta{
  display:flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--jade-light);
}

.brand__dot{
  display:inline-block;
  width:4px;
  height:4px;
  flex:0 0 auto;
  background:var(--gold-l);
  border-radius:50%;
  box-shadow:0 0 0 2px rgba(138,100,40,.25);
}

/* 主导航 */
.nav{
  display:flex;
  align-items:center;
  margin-left:auto;
}

.nav__list{
  display:flex;
  align-items:center;
  gap:2px;
}

.nav__item{display:flex}

.nav__link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:6px;
  padding:9px 12px;
  border-radius:var(--radius);
  font-family:var(--font-head);
  font-size:14px;
  letter-spacing:.045em;
  color:rgba(234,243,239,.78);
  white-space:nowrap;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}

.nav__idx{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:rgba(143,183,172,.7);
  transition:color var(--dur) var(--ease);
}

.nav__link:hover{
  color:#fff;
  background:rgba(143,183,172,.13);
}

.nav__link:hover .nav__idx{color:var(--jade-light)}

.nav__link[aria-current="page"]{color:#F3F7F4}

.nav__link[aria-current="page"] .nav__idx{color:var(--gold-l)}

.nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:0;
  height:2px;
  background:var(--cinnabar);
}

/* 对照切换浮层 */
.compare{
  position:relative;
  flex:0 0 auto;
  margin-left:6px;
}

.compare__btn{
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:36px;
  padding:0 14px;
  border:1px solid rgba(143,183,172,.42);
  border-radius:var(--radius);
  background:rgba(255,255,255,.09);
  color:#F3F7F4;
  font-family:var(--font-head);
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  cursor:pointer;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}

.compare__btn::after{
  content:"";
  width:6px;
  height:6px;
  border-right:1.5px solid currentColor;
  border-bottom:1.5px solid currentColor;
  transform:rotate(45deg) translateY(-1px);
  transition:transform var(--dur) var(--ease);
}

.compare__btn:hover{
  background:rgba(183,53,42,.9);
  border-color:var(--cinnabar);
}

.compare__btn[aria-expanded="true"]{
  background:var(--glass);
  border-color:var(--ink);
  color:var(--ink);
}

.compare__btn[aria-expanded="true"]::after{
  transform:rotate(-135deg) translateY(-1px);
}

.compare__panel{
  position:absolute;
  top:calc(100% + 10px);
  right:0;
  z-index:120;
  width:min(316px,calc(100vw - 2 * var(--gutter)));
  padding:14px;
  background:rgba(251,253,251,.98);
  color:var(--ink);
  border:1px solid var(--ink);
  box-shadow:0 26px 48px -30px rgba(8,40,36,.9);
}

.compare__label{
  margin-bottom:10px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  color:var(--mist);
}

.compare__list{display:grid;gap:2px}

.compare__item{
  display:block;
  padding:9px 10px;
  border-left:2px solid transparent;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}

.compare__item:hover{
  background:var(--ice);
  border-left-color:var(--cinnabar);
}

.compare__k{
  display:block;
  font-family:var(--font-head);
  font-size:14px;
  font-weight:700;
  letter-spacing:.03em;
}

.compare__v{
  display:block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;
  height:38px;
  flex:0 0 auto;
  margin-left:2px;
  border:1px solid rgba(143,183,172,.42);
  border-radius:var(--radius);
  color:#EAF3EF;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}

.nav-toggle:hover{
  border-color:rgba(201,164,92,.8);
  background:rgba(255,255,255,.07);
}

.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;
  height:13px;
}

.nav-toggle__bars span{
  position:absolute;
  left:0;
  right:0;
  height:1.5px;
  background:currentColor;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}

.nav-toggle__bars span:nth-child(1){top:0}
.nav-toggle__bars span:nth-child(2){top:5.5px}
.nav-toggle__bars span:nth-child(3){top:11px}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){
  transform:translateY(5.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){
  opacity:0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){
  transform:translateY(-5.5px) rotate(-45deg);
}

/* 滚动进度线 */
.cmdbar__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  pointer-events:none;
}

.cmdbar__progress > span{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--jade-light),var(--cinnabar) 62%,var(--gold-l));
  transition:transform 90ms linear;
}

/* ============================================================
   页脚
   ============================================================ */
.site-foot{
  position:relative;
  margin-top:clamp(56px,9vw,120px);
  background:var(--deep);
  color:rgba(234,243,239,.8);
  font-size:14.5px;
  border-top:1px solid rgba(143,183,172,.28);
}

.site-foot::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:var(--pine);
}

.site-foot::after{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:clamp(72px,12vw,150px);
  height:3px;
  background:var(--gold);
}

.foot__grid{
  display:grid;
  grid-template-columns:1.5fr repeat(3,minmax(0,1fr)) 1.5fr;
  gap:clamp(22px,2.6vw,44px);
  padding-block:clamp(44px,6vw,78px) clamp(28px,4vw,46px);
}

.foot__brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
}

.foot__logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}

.foot__mark{
  display:grid;
  place-items:center;
  width:32px;
  height:32px;
  flex:0 0 auto;
  background:rgba(30,91,83,.7);
  border:1px solid rgba(143,183,172,.5);
  color:#F3F7F4;
  font-family:var(--font-display);
  font-size:16px;
  line-height:1;
}

.foot__name{
  font-family:var(--font-head);
  font-weight:700;
  font-size:17px;
  letter-spacing:.1em;
  color:#F3F7F4;
}

.foot__tag{
  max-width:22em;
  font-size:14.5px;
  line-height:1.7;
  color:rgba(234,243,239,.74);
}

.foot__meta{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:rgba(143,183,172,.9);
}

.foot__col{min-width:0}

.foot__head{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  color:var(--jade-light);
}

.foot__list li + li{margin-top:9px}

.foot__list a{
  display:inline-block;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  color:rgba(234,243,239,.88);
  font-size:14.5px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}

.foot__list a:hover{
  color:#fff;
  border-bottom-color:var(--cinnabar);
}

.foot__contact{min-width:0}

.foot__contact-row{
  display:flex;
  gap:10px;
  margin-bottom:8px;
  font-family:var(--font-mono);
  font-size:13px;
  line-height:1.6;
  letter-spacing:.02em;
  color:rgba(234,243,239,.92);
  word-break:break-word;
}

.foot__key{
  flex:0 0 auto;
  width:32px;
  padding-top:2px;
  font-size:11px;
  letter-spacing:.14em;
  color:var(--jade-light);
}

.foot__note{
  max-width:38ch;
  margin-top:14px;
  font-size:12.5px;
  line-height:1.72;
  color:rgba(234,243,239,.58);
}

.foot__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 26px;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:18px var(--gutter) 34px;
  border-top:1px solid rgba(143,183,172,.18);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:rgba(234,243,239,.56);
}

.foot__legal{color:var(--gold-l)}

.foot__base-note{
  flex:1 1 260px;
  font-family:var(--font-body);
  font-size:12px;
  letter-spacing:.02em;
  color:rgba(234,243,239,.5);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .nav__link{padding:9px 9px;font-size:13.5px}
  .nav__idx{display:none}
}

@media (max-width:1060px){
  :root{--cmd-h:58px}

  .nav-toggle{display:inline-flex}

  .nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    margin-left:0;
    padding:6px var(--gutter) 18px;
    background:rgba(8,40,36,.985);
    border-top:1px solid rgba(143,183,172,.24);
    box-shadow:0 28px 44px -30px rgba(8,40,36,.95);
    max-height:calc(100vh - var(--cmd-h));
    overflow-y:auto;
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
  }

  .nav[data-open]{display:block}

  .nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }

  .nav__item + .nav__item{border-top:1px solid rgba(143,183,172,.14)}

  .nav__link{
    padding:14px 2px;
    font-size:15.5px;
    border-radius:0;
  }

  .nav__idx{display:inline;font-size:10.5px}

  .nav__link[aria-current="page"]{
    background:rgba(143,183,172,.1);
    padding-left:12px;
  }

  .nav__link[aria-current="page"]::after{
    left:auto;
    right:14px;
    bottom:auto;
    top:50%;
    width:20px;
    height:2px;
    transform:translateY(-50%);
  }

  .compare{margin-left:auto}
}

@media (max-width:1080px){
  .foot__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .foot__brand{grid-column:1 / -1}
  .foot__contact{grid-column:1 / -1}
}

@media (max-width:860px){
  .grid--2,
  .grid--3{grid-template-columns:1fr}
}

@media (max-width:720px){
  .brand__meta{display:none}
  .brand__mark{width:31px;height:31px;font-size:16px}
  .brand__name{font-size:14.5px;letter-spacing:.06em}
  .compare__btn{padding:0 11px;font-size:12.5px;letter-spacing:.04em}
  .compare__panel{right:0}
}

@media (max-width:560px){
  .foot__grid{grid-template-columns:1fr;gap:26px}
  .foot__base{flex-direction:column;align-items:flex-start;gap:8px}
}

@media (max-width:420px){
  .compare__btn span{display:none}
  .brand__name{font-size:13.5px}
}

/* ---------- 动效降级 ---------- */
@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;
  }

  .btn--primary:hover,
  .btn--pine:hover{transform:none}
}