/* ============================================================
   乐冠品牌 · 共享样式表 /assets/site.css
   矿物底色 + 珊瑚橙与电光紫强调 + 粗边框硬阴影
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink:#1E1B26;
  --ink-soft:#2C2836;
  --paper:#FAF6F1;
  --stone:#F1EAE0;
  --white:#FFFFFF;
  --coral:#FF6B4A;
  --clay:#C75B39;
  --volt:#6C4CF1;
  --rock:#6E6A72;
  --moss:#5F7A5B;
  --hi:#FFC24B;

  --line:2px solid var(--ink);
  --hair:2px solid rgba(30,27,38,.12);
  --shadow-hard:4px 4px 0 var(--ink);
  --shadow-hard-sm:3px 3px 0 var(--ink);
  --shadow-hard-lg:7px 7px 0 var(--ink);

  --r-capsule:999px;
  --r-card:14px;
  --r-soft:20px;

  --shell:min(1180px,92vw);
  --measure:44rem;

  --font-display:"Noto Sans SC","Source Han Sans SC","Alibaba PuHuiTi","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-editorial:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-body:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --ease:cubic-bezier(.22,.7,.3,1);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,pre{margin:0}
ul[class],ol[class]{margin:0;padding:0;list-style:none}
img,picture,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
summary{cursor:pointer}
*:focus-visible{outline:3px solid var(--volt);outline-offset:3px;border-radius:6px}

/* ---------- 3. 基底与中文排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:clamp(16px,1.05vw,17.5px);
  line-height:1.75;
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    radial-gradient(circle at 10% 6%,rgba(255,107,74,.08),transparent 42%),
    radial-gradient(circle at 92% 18%,rgba(108,76,241,.07),transparent 46%);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.18;letter-spacing:-.01em}
p{max-width:var(--measure)}
.display{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(38px,5.6vw,76px);
  line-height:1.03;
  letter-spacing:-.03em;
  margin-bottom:.4em;
}
.h-editorial{
  font-family:var(--font-editorial);
  font-weight:700;
  font-size:clamp(20px,2.4vw,30px);
  line-height:1.35;
  letter-spacing:.01em;
}
.num,.mono{
  font-family:var(--font-mono);
  font-weight:600;
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}
.price{
  font-family:var(--font-mono);
  font-weight:600;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(transparent 60%,var(--hi) 60%);
  padding:0 .12em;
}
.muted{color:var(--rock)}
.text-coral{color:var(--clay)}
.text-volt{color:var(--volt)}
.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}

/* ---------- 4. 布局外壳 ---------- */
.shell{width:var(--shell);margin-inline:auto}
.shell--narrow{width:min(760px,92vw);margin-inline:auto}
.measure{max-width:var(--measure)}

.section{padding:clamp(48px,7vw,96px) 0}
.section--stone{background:var(--stone)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--ink p{color:rgba(250,246,241,.8)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:18px;margin-bottom:clamp(24px,3.4vw,44px);
}

.grid{display:grid;gap:clamp(20px,2.6vw,40px)}
.grid-7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid-8-3{grid-template-columns:minmax(0,8fr) minmax(0,3fr)}
.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))}

.stack{display:grid;gap:clamp(12px,1.6vw,20px)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.divider{height:2px;background:var(--hair);border:0;margin:clamp(24px,3vw,40px) 0}

.edge-slant{height:clamp(24px,4vw,54px);background:var(--stone);clip-path:polygon(0 0,100% 46%,100% 100%,0 100%)}
.slant-band{
  height:clamp(30px,5vw,70px);
  background:linear-gradient(100deg,var(--coral),var(--hi) 52%,var(--volt));
  clip-path:polygon(0 0,100% 0,100% 44%,0 100%);
}

.eyebrow{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;color:var(--clay);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--coral)}

/* ---------- 5. 基础组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:12px 20px;border-radius:var(--r-capsule);
  border:2px solid var(--ink);background:var(--white);color:var(--ink);
  font-family:var(--font-body);font-weight:700;font-size:15px;line-height:1;white-space:nowrap;
  box-shadow:var(--shadow-hard-sm);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--ink)}
.btn:active{transform:translate(1px,1px);box-shadow:1px 1px 0 var(--ink)}
.btn-primary{background:var(--coral);color:var(--ink)}
.btn-primary:hover{background:#FF7F62}
.btn-volt{background:var(--volt);color:#fff}
.btn-volt:hover{background:#7D61F4}
.btn-ghost{background:transparent}
.btn-ghost:hover{background:var(--stone)}

.pill{
  display:inline-flex;align-items:center;gap:.4em;
  padding:5px 12px;border-radius:var(--r-capsule);
  border:2px solid var(--ink);background:var(--white);color:var(--ink);
  font-size:12.5px;font-weight:700;line-height:1.5;
}
.pill--coral{background:var(--coral)}
.pill--volt{background:var(--volt);color:#fff}
.pill--moss{background:var(--moss);color:#fff}
.pill--hi{background:var(--hi)}

.panel{
  background:var(--white);
  border:2px solid var(--ink);
  border-radius:var(--r-card);
  padding:clamp(18px,2.4vw,30px);
  box-shadow:var(--shadow-hard);
}
.panel--stone{background:var(--stone)}
.panel--ink{background:var(--ink);color:var(--paper)}
.panel--flat{box-shadow:none}
.panel--lift{transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
.panel--lift:hover{transform:translate(-3px,-3px);box-shadow:var(--shadow-hard-lg)}

.notice{
  display:grid;gap:6px;
  padding:15px 18px;
  background:var(--stone);
  border-left:6px solid var(--coral);
  border-radius:0 var(--r-card) var(--r-card) 0;
}
.notice--volt{border-left-color:var(--volt)}
.notice--moss{border-left-color:var(--moss)}
.notice--hi{border-left-color:var(--hi)}

/* ---------- 6. 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  padding:10px 0 8px;
  background:linear-gradient(180deg,rgba(250,246,241,.97),rgba(250,246,241,.82) 72%,rgba(250,246,241,0));
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.skip-link{
  position:absolute;left:50%;top:-72px;transform:translateX(-50%);z-index:120;
  padding:10px 20px;background:var(--hi);color:var(--ink);
  border:2px solid var(--ink);border-radius:0 0 14px 14px;
  font-weight:700;font-size:14px;text-decoration:none;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0}

.header-strip{
  max-height:46px;opacity:1;overflow:hidden;
  transition:max-height .3s var(--ease),opacity .24s var(--ease);
}
.site-header[data-scrolled] .header-strip{max-height:0;opacity:0}
.header-strip-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:2px 6px 8px;
}
.header-tagline{
  font-family:var(--font-editorial);font-size:13.5px;letter-spacing:.02em;
  color:var(--clay);max-width:none;
}
.header-utility{
  display:flex;align-items:center;gap:18px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.1em;
}
.utility-link{
  color:var(--rock);padding-bottom:2px;
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.utility-link:hover{color:var(--volt);border-bottom-color:var(--volt)}

.header-capsule{
  position:relative;
  width:var(--shell);margin-inline:auto;
  display:flex;align-items:center;gap:clamp(10px,1.6vw,22px);
  padding:10px 12px 10px 16px;
  background:var(--white);
  border:2px solid var(--ink);
  border-radius:var(--r-capsule);
  box-shadow:var(--shadow-hard);
  transition:padding .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header[data-scrolled] .header-capsule{padding:7px 10px 7px 13px;box-shadow:2px 2px 0 var(--ink)}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand-mark{
  display:grid;place-items:center;
  width:38px;height:38px;flex:0 0 auto;
  border:2px solid var(--ink);border-radius:11px;
  background:linear-gradient(135deg,var(--coral),var(--volt));
  color:#fff;font-family:var(--font-editorial);font-weight:700;font-size:19px;line-height:1;
  box-shadow:2px 2px 0 var(--ink);
  transform:rotate(-6deg);
  transition:transform .25s var(--ease);
}
.brand:hover .brand-mark{transform:rotate(4deg) scale(1.06)}
.brand-text{display:grid;gap:1px;min-width:0}
.brand-name{font-family:var(--font-display);font-weight:900;font-size:16px;line-height:1.1;letter-spacing:.02em}
.brand-line{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;color:var(--rock);line-height:1.3}

.site-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  display:block;padding:9px 12px;
  border:2px solid transparent;border-radius:var(--r-capsule);
  font-size:14.5px;font-weight:600;line-height:1.3;white-space:nowrap;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
}
.nav-link:hover{background:var(--stone);border-color:var(--ink);box-shadow:2px 2px 0 var(--ink)}
.nav-link[aria-current="page"]{background:var(--coral);border-color:var(--ink);box-shadow:2px 2px 0 var(--ink);color:var(--ink)}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:14px}
.btn-cta{font-size:14.5px;padding:11px 18px}

.nav-toggle{
  display:none;position:relative;width:42px;height:38px;padding:0;
  border:2px solid var(--ink);border-radius:12px;background:var(--white);
  box-shadow:2px 2px 0 var(--ink);cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-toggle:hover{transform:translate(-1px,-1px);box-shadow:3px 3px 0 var(--ink)}
.nav-toggle-bar{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transform:translateX(-50%);
  transition:transform .22s var(--ease),opacity .18s var(--ease);
}
.nav-toggle-bar:nth-child(1){top:11px}
.nav-toggle-bar:nth-child(2){top:17px}
.nav-toggle-bar:nth-child(3){top:23px}
.site-header[data-open] .nav-toggle-bar:nth-child(1){transform:translateX(-50%) translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bar:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bar:nth-child(3){transform:translateX(-50%) translateY(-6px) rotate(-45deg)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--coral),var(--hi) 48%,var(--volt));
  transform:scaleX(0);transform-origin:0 50%;
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,7vw,96px);
  background:var(--ink);color:var(--paper);
  padding-bottom:clamp(18px,3vw,30px);
}
.site-footer::after{
  content:"";position:absolute;right:-12%;bottom:-46%;width:520px;height:520px;
  background:radial-gradient(circle,rgba(108,76,241,.38),transparent 66%);
  pointer-events:none;
}
.footer-rail{
  height:12px;
  background:linear-gradient(90deg,var(--coral),var(--hi) 46%,var(--volt));
  clip-path:polygon(0 0,100% 0,100% 24%,0 100%);
}
.footer-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.15fr 1.4fr 1fr;
  gap:clamp(24px,3.4vw,56px);
  padding:clamp(34px,4.6vw,62px) 0 clamp(22px,3vw,38px);
}
.footer-brand .brand-name{color:var(--paper)}
.footer-brand .brand-line{color:rgba(250,246,241,.6)}
.footer-note{
  margin-top:16px;max-width:40ch;
  font-size:14px;line-height:1.7;color:rgba(250,246,241,.72);
}
.footer-note--tiny{margin-top:14px;font-size:12.5px;color:rgba(250,246,241,.55)}
.footer-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.site-footer .pill{background:rgba(250,246,241,.08);border-color:rgba(250,246,241,.36);color:var(--paper)}
.site-footer .pill--coral{background:var(--coral);border-color:var(--coral);color:var(--ink)}
.site-footer .pill--volt{background:var(--volt);border-color:var(--volt);color:#fff}

.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.2vw,30px)}
.footer-col-title{
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--hi);
  margin-bottom:14px;
}
.footer-links{display:grid;gap:9px}
.footer-link{
  display:inline-block;font-size:14.5px;color:rgba(250,246,241,.82);
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover{color:var(--coral);border-bottom-color:var(--coral)}

.contact-list{display:grid;gap:13px}
.contact-item{display:grid;gap:3px}
.contact-label{
  font-family:var(--font-mono);font-size:10.5px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--hi);
}
.contact-value{font-size:14px;line-height:1.6;color:#F3EDE6;word-break:break-word;overflow-wrap:anywhere}

.footer-base{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;
  padding-top:20px;border-top:2px solid rgba(250,246,241,.16);
  font-size:13px;color:rgba(250,246,241,.68);
}
.footer-copy{max-width:none}
.footer-legal{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer-legal .footer-link{font-size:13px}

/* ---------- 8. 通用内容组件 ---------- */
.breadcrumb{padding:clamp(18px,2.4vw,28px) 0 0}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;font-size:13.5px;color:var(--rock)}
.breadcrumb-list li{display:flex;align-items:center;gap:.5rem}
.breadcrumb-list li+li::before{content:"›";color:var(--volt);font-weight:700}
.breadcrumb-link{color:var(--rock);border-bottom:2px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.breadcrumb-link:hover{color:var(--clay);border-bottom-color:var(--clay)}
.breadcrumb-current{color:var(--ink);font-weight:600}

.anchor-index{border-top:var(--line);border-bottom:var(--line);padding:6px 0}
.anchor-index a{
  display:flex;align-items:baseline;justify-content:space-between;gap:14px;
  padding:11px 14px;border-left:6px solid transparent;
  font-size:15px;font-weight:600;color:var(--ink);
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.anchor-index a:hover{background:var(--hi);border-left-color:var(--ink)}
.anchor-index a[aria-current="true"],
.anchor-index a.is-active{background:var(--stone);border-left-color:var(--coral)}
.anchor-index .index-note{font-family:var(--font-mono);font-size:12px;font-weight:600;color:var(--rock)}

.step-list{counter-reset:step;display:grid;gap:14px}
.step{
  position:relative;padding:16px 18px 16px 64px;
  background:var(--white);border:2px solid var(--ink);border-radius:12px;
}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:14px;top:14px;
  padding:4px 9px;border-radius:8px;
  background:var(--volt);color:#fff;
  font-family:var(--font-mono);font-size:13px;font-weight:700;line-height:1.4;
}
.step-title{font-family:var(--font-display);font-weight:800;font-size:17px;margin-bottom:4px}

.faq{border:2px solid var(--ink);border-radius:12px;background:var(--white)}
.faq+.faq{margin-top:12px}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:15px 18px;font-weight:700;font-size:16px;list-style:none;
  transition:background-color .18s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-mono);font-weight:700;color:var(--volt);font-size:18px}
.faq[open] summary{background:var(--stone)}
.faq[open] summary::after{content:"–"}
.faq-body{padding:2px 18px 18px;border-top:2px dashed rgba(30,27,38,.18)}
.faq-body p{margin-top:12px}

.data-table{font-size:15px;background:var(--white);border:2px solid var(--ink);border-radius:var(--r-card);overflow:hidden}
.data-table th,.data-table td{padding:12px 14px;text-align:left;border-bottom:2px solid rgba(30,27,38,.1)}
.data-table thead th{
  background:var(--ink);color:var(--paper);
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table tbody tr:hover{background:var(--stone)}
.data-table .num,.data-table td.num,.data-table th.num{text-align:right;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600}
.data-table .is-changed{background:linear-gradient(transparent 58%,var(--hi) 58%)}

.media-frame{
  position:relative;overflow:hidden;
  background:var(--stone);
  border:2px solid var(--ink);border-radius:var(--r-card);
  box-shadow:var(--shadow-hard);
}
.media-frame img,.media-frame picture>img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.media-frame--wide img{aspect-ratio:21/9}
.media-frame--portrait img{aspect-ratio:4/5}
.media-frame--square img{aspect-ratio:1/1}
.media-frame--tilt{transform:rotate(-1.6deg)}
.media-frame--tilt-r{transform:rotate(1.4deg)}
.media-caption{margin-top:10px;font-family:var(--font-mono);font-size:12px;color:var(--rock)}
.media-frame figcaption{
  padding:10px 14px;border-top:2px solid var(--ink);
  background:var(--white);font-family:var(--font-mono);font-size:12px;color:var(--rock);
}

/* ---------- 9. 显现动效（无 JS 时自动可见） ---------- */
.js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 10. 平板 ---------- */
@media (max-width:1023px){
  .grid-7-5,.grid-8-3,.grid-3,.grid-4{grid-template-columns:1fr}
  .grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 11. 移动端导航 ---------- */
@media (max-width:1079px){
  .site-nav{display:none}
  .site-header[data-open] .site-nav{
    display:block;
    position:absolute;top:calc(100% + 12px);left:0;right:0;z-index:5;
    padding:12px;
    background:var(--white);
    border:2px solid var(--ink);border-radius:var(--r-soft);
    box-shadow:var(--shadow-hard);
    max-height:min(72vh,540px);overflow:auto;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{padding:12px 14px;border-radius:14px;font-size:15.5px}
  .header-actions{margin-left:auto}
  .nav-toggle{display:block}
  .site-header .brand-line{display:none}
}

/* ---------- 12. 手机 ---------- */
@media (max-width:680px){
  .grid-2{grid-template-columns:1fr}
  .section{padding:clamp(38px,9vw,56px) 0}
  .footer-grid{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr;gap:22px}
  .footer-base{flex-direction:column;align-items:flex-start}
  .header-strip-inner{justify-content:center}
  .header-tagline{display:none}
  .header-capsule{gap:8px;padding:8px 9px 8px 12px}
  .brand-mark{width:34px;height:34px;font-size:17px;border-radius:10px}
  .brand-name{font-size:14px}
  .btn-cta{padding:9px 13px;font-size:13px}
}
@media (max-width:380px){
  .btn-cta{padding:8px 11px;font-size:12px}
  .nav-toggle{width:38px;height:34px}
  .nav-toggle-bar:nth-child(1){top:9px}
  .nav-toggle-bar:nth-child(2){top:15px}
  .nav-toggle-bar:nth-child(3){top:21px}
}

/* ---------- 13. 减少动效 ---------- */
@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;
  }
  .js [data-reveal]{opacity:1;transform:none}
  .brand:hover .brand-mark{transform:rotate(-6deg)}
  .btn:hover,.panel--lift:hover{transform:none}
  .media-frame--tilt,.media-frame--tilt-r{transform:none}
}