/* =========================================================
   永利品牌站 · 共享样式 /assets/site.css
   设计语言：技术蓝图网格 + 海岛数字指南
   ========================================================= */

:root{
  --deep:#0B2E4F;
  --midnight:#071A2B;
  --sea:#1A6EA8;
  --sea-soft:#D9E8F5;
  --pearl:#F7F9FB;
  --coral:#FF6B4A;
  --coral-deep:#B33A1E;
  --coral-soft:#FFE0D6;
  --gold:#C9A227;
  --ink:#16222E;
  --muted:#6B7A8A;
  --glass:rgba(255,255,255,.10);
  --glass-strong:rgba(255,255,255,.17);
  --line-dark:rgba(255,255,255,.16);
  --line-light:rgba(11,46,79,.14);
  --shell:1200px;
  --gutter:clamp(18px,4vw,48px);
  --rail-h:46px;
  --nav-h:68px;
  --radius:14px;
  --radius-lg:22px;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:150px;
}
body{
  margin:0;
  background:var(--pearl);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img,svg,video{max-width:100%;display:block}
button{font:inherit;color:inherit}
a{color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.24;font-weight:800;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}

:focus-visible{
  outline:2px solid var(--coral);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------- 工具类 ---------- */
.mono{
  font-family:var(--font-mono);
  font-size:.8em;
  letter-spacing:.04em;
}
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.shell--narrow{max-width:820px}
.shell--wide{max-width:1380px}

.link-underline{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding-bottom:3px;
  text-decoration:none;
  color:inherit;
  border-bottom:1px solid rgba(107,122,138,.34);
}
.link-underline::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:var(--coral);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .3s var(--ease);
}
.link-underline:hover::after{transform:scaleX(1)}
.link-underline:hover{color:var(--deep)}

.highlight{
  color:var(--coral-deep);
  font-weight:700;
  padding:0 2px;
  background:linear-gradient(transparent 62%,var(--coral-soft) 62%);
}

.blueprint{position:relative}
.blueprint::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(var(--line-light) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-light) 1px,transparent 1px);
  background-size:88px 88px;
  opacity:.55;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 10%,#000 90%,transparent);
  mask-image:linear-gradient(180deg,transparent,#000 10%,#000 90%,transparent);
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:0;
  left:var(--gutter);
  z-index:1000;
  transform:translateY(-130%);
  padding:12px 22px;
  border-radius:0 0 12px 12px;
  background:var(--coral);
  color:#fff;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* =========================================================
   页头
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  box-shadow:0 12px 30px -26px rgba(7,26,43,.9);
}

.header-rail{
  background:var(--midnight);
  color:#D7E6F3;
  border-bottom:1px solid var(--line-dark);
}
.rail-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:var(--rail-h);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  text-decoration:none;
  color:#fff;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:28px;height:28px;
  flex:none;
  border-radius:8px;
  background:var(--coral);
  color:#fff;
  font-size:14px;
  font-weight:800;
  line-height:1;
}
.brand-mark--gold{
  background:transparent;
  border:1px solid var(--gold);
  color:var(--gold);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:15px;font-weight:800;letter-spacing:.02em}
.brand-sub{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.02em;
  color:rgba(215,230,243,.6);
}

.rail-note{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:rgba(215,230,243,.74);
}
.rail-dot{
  width:6px;height:6px;
  flex:none;
  border-radius:50%;
  background:var(--coral);
  box-shadow:0 0 0 3px rgba(255,107,74,.18);
}

.header-nav{
  position:relative;
  background:var(--deep);
  color:#E3EEF8;
}
.header-nav::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.13) 0 1px,transparent 1px 88px);
  opacity:.6;
}
.nav-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  gap:20px;
  min-height:var(--nav-h);
}
.site-nav{flex:1 1 auto}
.nav-list{
  display:flex;
  align-items:center;
  gap:4px;
  flex-wrap:wrap;
}
.nav-list a{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:6px 14px;
  border-radius:10px;
  color:rgba(227,238,248,.86);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  text-decoration:none;
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.nav-list a::before{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:7px;
  height:2px;
  border-radius:2px;
  background:var(--coral);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .3s var(--ease);
}
.nav-idx{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:rgba(217,232,245,.42);
  transition:color .22s var(--ease);
}
.nav-list a:hover{
  color:#fff;
  background:rgba(255,255,255,.07);
}
.nav-list a:hover::before{transform:scaleX(1)}
.nav-list a:hover .nav-idx{color:var(--coral)}
.nav-list a[aria-current="page"]{
  color:#fff;
  background:rgba(255,255,255,.1);
}
.nav-list a[aria-current="page"]::before{transform:scaleX(1)}
.nav-list a[aria-current="page"] .nav-idx{color:var(--coral)}

.nav-meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(217,232,245,.62);
  white-space:nowrap;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  min-height:44px;
  padding:8px 15px;
  border-radius:999px;
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.08);
  color:#fff;
  font-size:14px;
  font-weight:700;
  cursor:pointer;
  transition:background-color .22s var(--ease),border-color .22s var(--ease);
}
.nav-toggle:hover{
  background:rgba(255,255,255,.15);
  border-color:rgba(255,107,74,.62);
}
.nav-toggle-bars{display:grid;gap:4px;width:16px}
.nav-toggle-bars span{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.scroll-progress{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  z-index:3;
  background:var(--coral);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .12s linear;
}

/* =========================================================
   按钮
   ========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-coral{background:var(--coral);color:#fff}
.btn-coral:hover{background:#FF8163}
.btn-sea{background:var(--sea);color:#fff}
.btn-sea:hover{background:#155C8C}
.btn-ghost{border-color:var(--sea);color:var(--sea);background:transparent}
.btn-ghost:hover{background:var(--sea-soft)}
.btn-onDark{border-color:rgba(255,255,255,.34);color:#fff;background:transparent}
.btn-onDark:hover{border-color:var(--coral);background:rgba(255,107,74,.16)}
.btn-sm{min-height:38px;padding:7px 17px;font-size:14px}

/* =========================================================
   面包屑 / 正文
   ========================================================= */
.breadcrumb{
  padding-block:16px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.03em;
  color:var(--muted);
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:rgba(107,122,138,.5)}
.breadcrumb a{color:var(--sea);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:600}

.prose{max-width:72ch}
.prose p{
  margin:0 0 1.1em;
  font-size:17px;
  line-height:1.85;
}
.prose h2{
  font-size:clamp(1.5rem,2.4vw,2rem);
  margin:2em 0 .7em;
}
.prose h3{
  font-size:1.15rem;
  font-weight:700;
  margin:1.6em 0 .5em;
}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1.2em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.5em}
.prose a{
  color:var(--sea);
  text-decoration:underline;
  text-underline-offset:3px;
}
.prose code{
  font-family:var(--font-mono);
  font-size:.88em;
  background:var(--sea-soft);
  padding:1px 6px;
  border-radius:6px;
}

/* =========================================================
   分区与标题
   ========================================================= */
.section{padding-block:clamp(44px,6vw,88px)}
.section--tight{padding-block:clamp(28px,4vw,56px)}
.section--soft{background:var(--sea-soft)}
.section--deep{background:var(--deep);color:#E3EEF8}
.section--deep h2,.section--deep h3,.section--deep h4{color:#fff}
.section--deep .section-head{border-bottom-color:var(--line-dark)}
.section--deep .section-lead{color:rgba(217,232,245,.7)}
.section--deep .card__text{color:rgba(217,232,245,.72)}
.breath{padding-block:clamp(48px,9vw,120px)}

.section-head{
  position:relative;
  display:flex;
  align-items:baseline;
  flex-wrap:wrap;
  gap:14px;
  padding-bottom:14px;
  margin-bottom:clamp(20px,3vw,34px);
  border-bottom:1px solid var(--line-light);
}
.section-head::after{
  content:"";
  position:absolute;
  left:0;bottom:-1px;
  width:72px;height:3px;
  background:var(--coral);
}
.section-num{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--coral);
}
.section-num::after{
  content:"";
  display:block;
  width:26px;height:1px;
  background:currentColor;
}
.section-title{font-size:clamp(1.6rem,2.8vw,2.25rem);letter-spacing:-.02em}
.section-lead{
  font-size:15px;
  color:var(--muted);
  max-width:48ch;
}

/* =========================================================
   网格
   ========================================================= */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.split{
  display:grid;
  grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);
  gap:clamp(20px,3vw,44px);
  align-items:start;
}
.split--reverse{grid-template-columns:minmax(0,1fr) minmax(0,1.7fr)}

/* =========================================================
   卡片 / 标签 / 图片容器
   ========================================================= */
.card{
  position:relative;
  padding:clamp(20px,2.4vw,30px);
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--radius-lg);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{
  border-color:rgba(255,107,74,.55);
  box-shadow:0 16px 36px -24px rgba(11,46,79,.42);
}
.card--glass{
  background:var(--glass);
  border-color:var(--line-dark);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.card--glass:hover{background:var(--glass-strong)}
.card__index{
  display:block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--coral);
}
.card__title{
  margin:10px 0 8px;
  font-size:1.15rem;
  font-weight:700;
  line-height:1.4;
}
.card__text{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 12px;
  border-radius:999px;
  background:var(--coral-soft);
  color:var(--coral-deep);
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.03em;
  line-height:1.7;
}
.tag--sea{background:var(--sea-soft);color:var(--sea)}
.tag--gold{background:rgba(201,162,39,.16);color:#8A6E12}

.figure{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border:1px solid var(--line-light);
  border-radius:var(--radius-lg);
  background:linear-gradient(150deg,var(--sea-soft),#fff 62%);
}
.figure > img,
.figure > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure--wide{aspect-ratio:21 / 9}
.figure--tall{aspect-ratio:3 / 4}
.figure--square{aspect-ratio:1 / 1}
.figure--screen{
  aspect-ratio:4 / 3;
  background:linear-gradient(160deg,var(--deep),var(--sea));
}
.figure__tag{position:absolute;left:14px;top:14px;z-index:2}
.figure__caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.03em;
  color:var(--muted);
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  padding-top:clamp(48px,7vw,88px);
  background:var(--midnight);
  color:rgba(215,230,243,.82);
  border-top:3px solid var(--coral);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.06) 0 1px,transparent 1px 88px);
}
.footer-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.5fr 1fr 1.4fr 1fr;
  gap:clamp(24px,3vw,48px);
  padding-bottom:clamp(36px,5vw,64px);
}
.footer-col{min-width:0}
.footer-brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:12px;
}
.footer-name{
  font-size:18px;
  font-weight:800;
  letter-spacing:.02em;
  color:#fff;
}
.footer-line{
  font-size:14px;
  line-height:1.75;
  color:rgba(215,230,243,.66);
  max-width:30ch;
}
.footer-flag{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  padding:4px 12px;
  border-radius:999px;
  color:var(--coral-soft);
  background:rgba(255,107,74,.14);
  border:1px solid rgba(255,107,74,.34);
}
.footer-h{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.16em;
  color:#fff;
}
.footer-list{
  display:flex;
  flex-direction:column;
  gap:10px;
  font-size:14.5px;
}
.footer-list > li{min-width:0}
.site-footer .link-underline{
  color:rgba(215,230,243,.8);
  border-bottom-color:rgba(255,255,255,.24);
}
.site-footer .link-underline:hover{color:#fff}
.footer-contact{gap:14px}
.footer-contact > li{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:8px;
  line-height:1.75;
}
.footer-label{
  flex:none;
  min-width:64px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--gold);
}
.footer-value{
  color:rgba(215,230,243,.9);
  overflow-wrap:anywhere;
}
.copy-btn{
  min-height:32px;
  padding:4px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.24);
  background:transparent;
  color:rgba(215,230,243,.85);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  cursor:pointer;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.copy-btn:hover{
  border-color:var(--coral);
  color:#fff;
  background:rgba(255,107,74,.16);
}
.copy-btn.is-done{
  border-color:var(--coral);
  color:#fff;
  background:rgba(255,107,74,.3);
}
.footer-note{
  margin-top:14px;
  font-size:13px;
  line-height:1.75;
  color:rgba(215,230,243,.52);
  max-width:34ch;
}
.footer-base{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-block:20px;
  border-top:1px solid var(--line-dark);
  font-size:12px;
  color:rgba(215,230,243,.55);
}
.footer-30{color:var(--coral-soft)}

/* =========================================================
   显现动效
   ========================================================= */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:980px){
  html{scroll-padding-top:120px}
  .nav-inner{
    flex-wrap:wrap;
    gap:12px;
    padding-block:10px;
    min-height:0;
  }
  .nav-toggle{display:inline-flex}
  .site-nav{
    display:none;
    flex:1 1 100%;
    order:3;
    padding-top:4px;
  }
  .site-nav[data-open]{display:block}
  .nav-list{
    flex-wrap:nowrap;
    overflow-x:auto;
    gap:8px;
    padding-bottom:8px;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:thin;
  }
  .nav-list a{
    white-space:nowrap;
    padding:8px 16px;
    border-radius:999px;
    border:1px solid var(--line-dark);
    background:rgba(255,255,255,.06);
  }
  .nav-list a::before{display:none}
  .nav-list a[aria-current="page"]{
    background:rgba(255,107,74,.18);
    border-color:var(--coral);
  }
  .nav-meta{display:none}
  .split,.split--reverse{grid-template-columns:1fr}
}

@media (max-width:720px){
  body{font-size:16px}
  .rail-note{display:none}
  .brand-sub{display:none}
  .btn-coral{padding:9px 17px;font-size:14px}
}

@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-base{flex-direction:column;align-items:flex-start}
  .section-head{gap:10px}
}

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