/* =========================================================
   365在线 · 共享站点套件 / site kit
   湖水蓝 × 高原土黄 · 奶油纸底 · 24px 蓝图网格 · 经幡五色
   ========================================================= */

:root{
  /* 主色体系 */
  --lake:#0E5A85;
  --lake-deep:#0A3C57;
  --lake-pale:#D3E7F1;
  --cream:#F7F0E1;
  --paper:#FFFFFF;
  --earth:#C0862B;
  --earth-deep:#A26E1D;
  --ink:#241C16;
  --mist:#6B8393;
  /* 经幡五色 */
  --flag-red:#C0432C;
  --flag-green:#2E7A5C;
  --flag-yellow:#E9B93C;
  --flag-blue:#0E5A85;
  --flag-white:#FFFFFF;
  /* 线 · 面 */
  --line:rgba(14,90,133,.16);
  --line-strong:rgba(14,90,133,.36);
  --hair:rgba(36,28,22,.12);
  /* 字体 */
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  /* 结构 */
  --shell:1240px;
  --grid:24px;
  --radius:14px;
  --radius-lg:20px;
  --header-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-float:0 20px 42px -26px rgba(10,60,87,.55),0 2px 0 rgba(10,60,87,.05);
}

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

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 34px);
}

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  color:var(--ink);
  background:var(--cream);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

img,svg,video{ max-width:100%; display:block; }
ul,ol{ margin:0; padding:0; list-style:none; }
a{ color:var(--lake); text-decoration-thickness:1px; text-underline-offset:3px; }
button{ font:inherit; color:inherit; }
::selection{ background:var(--flag-yellow); color:var(--ink); }

/* ---------- 中文排版 ---------- */
h1,h2,h3,h4{
  margin:0;
  font-weight:600;
  line-height:1.16;
  letter-spacing:-.005em;
  text-wrap:balance;
  color:var(--ink);
}
h1{ font-size:clamp(38px,6vw,74px); line-height:1.05; }
h2{ font-size:clamp(26px,3.4vw,40px); }
h3{ font-size:clamp(19px,2.2vw,24px); line-height:1.3; }
h4{ font-size:17px; }
p{ margin:0 0 1em; }
strong{ font-weight:600; }
small{ font-size:13px; }

/* ---------- 可访问性 ---------- */
.visually-hidden{
  position:absolute !important;
  width:1px; height:1px;
  margin:-1px; padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--earth);
  outline-offset:2px;
}

/* ---------- 布局工具 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,40px);
}

.blueprint{
  background-image:
    linear-gradient(to right,var(--line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--line) 1px,transparent 1px);
  background-size:var(--grid) var(--grid);
  background-position:center top;
}

.cut-corner{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  left:18px; top:14px;
  z-index:200;
  display:inline-block;
  padding:10px 20px;
  border-radius:999px;
  background:var(--lake-deep);
  color:var(--cream);
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform .22s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{ transform:translateY(0); }

/* =========================================================
   悬浮胶囊刊头
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding:14px clamp(12px,3vw,20px) 0;
}

.site-header::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(to bottom,rgba(247,240,225,.96),rgba(247,240,225,.72) 62%,rgba(247,240,225,0));
  pointer-events:none;
}

.header-inner{
  position:relative;
  width:100%;
  max-width:var(--shell);
  min-height:var(--header-h);
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,22px);
  padding:0 clamp(12px,2.4vw,22px);
  border:1px solid transparent;
  border-radius:999px;
  background:rgba(247,240,225,.74);
  -webkit-backdrop-filter:blur(10px) saturate(1.1);
  backdrop-filter:blur(10px) saturate(1.1);
  transition:min-height .32s var(--ease),max-width .32s var(--ease),
             background .32s var(--ease),border-color .32s var(--ease),
             box-shadow .32s var(--ease),padding .32s var(--ease);
}

.site-header[data-scrolled="true"] .header-inner{
  min-height:56px;
  max-width:1080px;
  background:rgba(255,255,255,.95);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-float);
}

/* 刊头标记 */
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--ink);
}

.brand-mark{
  width:38px; height:38px;
  display:grid;
  place-items:center;
  flex:0 0 auto;
  background:var(--lake);
  color:var(--cream);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%);
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.brand:hover .brand-mark,
.brand:focus-visible .brand-mark{ background:var(--earth); color:var(--ink); }

.brand-text{ display:flex; flex-direction:column; line-height:1.12; }

.brand-name{
  font-size:19px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
}

.brand-sub{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.16em;
  color:var(--mist);
  text-transform:uppercase;
  margin-top:2px;
}

/* 栏目胶囊 */
.site-nav{ margin-left:auto; }

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

.nav-item{ display:block; }

.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  border-radius:999px;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--ink);
  text-decoration:none;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-link:hover{ background:var(--lake-pale); color:var(--lake-deep); }

.nav-link[aria-current="page"]{
  background:var(--lake-pale);
  color:var(--lake-deep);
  font-weight:600;
  box-shadow:inset 0 -2px 0 var(--earth);
}

/* 右侧操作 */
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

.header-note{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
  white-space:nowrap;
}

.index-link{
  width:40px; height:40px;
  display:grid;
  place-items:center;
  flex:0 0 auto;
  border:1px solid var(--line-strong);
  border-radius:999px;
  color:var(--lake-deep);
  text-decoration:none;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.index-link:hover{ background:var(--lake-pale); border-color:var(--lake); transform:translateY(-1px); }

.index-glyph{
  display:grid;
  grid-template-columns:repeat(2,3px);
  grid-template-rows:repeat(2,3px);
  gap:3px;
}
.index-glyph i{
  display:block;
  width:3px; height:3px;
  border-radius:1px;
  background:currentColor;
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  width:40px; height:40px;
  align-items:center;
  justify-content:center;
  padding:0;
  border:1px solid var(--line-strong);
  border-radius:999px;
  background:transparent;
  color:var(--lake-deep);
  cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{ background:var(--lake-pale); }

.nav-toggle-bars{
  position:relative;
  display:block;
  width:16px; height:2px;
  border-radius:2px;
  background:currentColor;
  transition:background .22s var(--ease);
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px; height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .24s var(--ease),top .24s var(--ease);
}
.nav-toggle-bars::before{ top:-5px; }
.nav-toggle-bars::after{ top:5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars{ background:transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{ top:0; transform:rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{ top:0; transform:rotate(-45deg); }

/* 阅读进度 */
.scroll-progress{
  position:absolute;
  left:18px; right:18px; bottom:5px;
  height:2px;
  border-radius:999px;
  background:linear-gradient(90deg,var(--earth),var(--flag-red));
  transform:scaleX(var(--p,0));
  transform-origin:left center;
  opacity:0;
  pointer-events:none;
  transition:opacity .3s var(--ease);
}
.site-header[data-scrolled="true"] .scroll-progress{ opacity:.92; }

/* =========================================================
   通用按钮
   ========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:42px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:999px;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1;
  text-decoration:none;
  white-space:nowrap;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),
             box-shadow .2s var(--ease),transform .2s var(--ease);
}

.btn-sun{
  background:var(--earth);
  color:var(--ink);
  box-shadow:0 10px 20px -14px rgba(192,134,43,.95);
}
.btn-sun:hover{ background:var(--flag-yellow); transform:translateY(-1px); }

.btn-ghost{
  background:transparent;
  color:var(--lake-deep);
  border-color:var(--line-strong);
}
.btn-ghost:hover{ background:var(--lake-pale); border-color:var(--lake); }

.btn-ink{
  background:var(--lake);
  color:#fff;
}
.btn-ink:hover{ background:var(--lake-deep); transform:translateY(-1px); }

/* =========================================================
   版权页式页脚
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:clamp(60px,9vw,120px);
  padding-block:clamp(44px,6vw,76px) 26px;
  background:var(--lake-deep);
  color:rgba(247,240,225,.82);
  overflow:hidden;
}

.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right,rgba(247,240,225,.07) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(247,240,225,.07) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),rgba(0,0,0,0) 72%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),rgba(0,0,0,0) 72%);
  pointer-events:none;
}

.footer-inner{
  position:relative;
  z-index:1;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,40px);
}

.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.35fr 1fr;
  gap:clamp(26px,4vw,56px);
}

.footer-col{ min-width:0; }

.footer-col-title{
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--earth);
}

.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--cream);
}

.footer-mark{
  width:34px; height:34px;
  display:grid;
  place-items:center;
  flex:0 0 auto;
  background:var(--earth);
  color:var(--lake-deep);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.04em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
}

.footer-name{
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--cream);
}

.footer-desc{
  margin:16px 0 18px;
  max-width:30ch;
  font-size:14px;
  line-height:1.8;
  color:rgba(247,240,225,.7);
}

.footer-quick{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}

.footer-list{
  display:flex;
  flex-direction:column;
  gap:10px;
}

.footer-link{
  display:inline-block;
  font-size:14px;
  color:rgba(247,240,225,.8);
  text-decoration:none;
  transition:color .2s var(--ease);
}
.footer-link:hover,
.footer-link:focus-visible{
  color:var(--flag-yellow);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
}

.footer-link-strong{
  padding:7px 16px;
  border-radius:999px;
  background:var(--earth);
  color:var(--lake-deep);
  font-size:13px;
  font-weight:600;
  letter-spacing:.03em;
  text-decoration:none;
}
.footer-link-strong:hover,
.footer-link-strong:focus-visible{
  background:var(--flag-yellow);
  color:var(--lake-deep);
  text-decoration:none;
}

.contact-line{
  display:flex;
  flex-direction:column;
  gap:2px;
  font-size:14px;
  line-height:1.6;
  color:rgba(247,240,225,.88);
  word-break:break-word;
}

.contact-label{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:rgba(247,240,225,.5);
}

.footer-meta{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  color:rgba(247,240,225,.64);
}

.footer-note{
  margin:16px 0 0;
  max-width:32ch;
  font-size:12px;
  line-height:1.75;
  color:rgba(247,240,225,.56);
}

.legal-bar{
  margin-top:clamp(32px,5vw,56px);
  padding-top:18px;
  border-top:1px solid rgba(247,240,225,.16);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(247,240,225,.6);
}

.legal-copy,
.legal-locale{ margin:0; }

/* =========================================================
   内容组件
   ========================================================= */
.section{ padding-block:clamp(48px,7vw,96px); }

.section-head{
  display:flex;
  flex-direction:column;
  gap:14px;
  max-width:64ch;
  margin-bottom:clamp(26px,4vw,46px);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--earth);
}
.eyebrow::before{
  content:"";
  width:26px; height:1px;
  background:var(--earth);
  flex:0 0 auto;
}

.section-title{ margin:0; }

.section-lead{
  margin:0;
  max-width:46ch;
  font-size:16px;
  line-height:1.8;
  color:var(--mist);
}

.grid-2{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(18px,3vw,32px);
}

.split{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,4fr);
  gap:clamp(20px,3.4vw,44px);
  align-items:start;
}

.prose{
  max-width:38em;
  font-size:17px;
  line-height:1.85;
}
.prose p{ margin:0 0 1.1em; }
.prose h2,
.prose h3{ margin:1.6em 0 .6em; }
.prose ul,
.prose ol{ margin:0 0 1.2em; padding:0; list-style:none; }
.prose li{
  position:relative;
  padding-left:20px;
  margin-bottom:8px;
}
.prose li::before{
  content:"";
  position:absolute;
  left:0; top:.72em;
  width:8px; height:1px;
  background:var(--earth);
}
.prose a{ color:var(--lake); }

.breadcrumb{
  padding-block:18px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--mist);
}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb-list li + li::before{
  content:"/";
  margin-right:8px;
  color:var(--line-strong);
}
.breadcrumb-link{
  color:var(--mist);
  text-decoration:none;
  transition:color .2s var(--ease);
}
.breadcrumb-link:hover{ color:var(--lake); }
.breadcrumb [aria-current="page"]{ color:var(--ink); }

.card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(18px,2.4vw,28px);
}
.card-cut{
  border-radius:0;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}
.card-ink{
  background:var(--lake-deep);
  border-color:transparent;
  color:rgba(247,240,225,.85);
}
.card-ink h2,
.card-ink h3,
.card-ink h4{ color:var(--cream); }

/* 经幡五色标签 */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border:1px solid transparent;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.6;
  white-space:nowrap;
}
.tag-account{ background:var(--flag-red); color:var(--flag-white); }
.tag-benefit{ background:var(--flag-green); color:var(--flag-white); }
.tag-export{ background:var(--flag-yellow); color:var(--ink); }
.tag-display{ background:var(--flag-blue); color:var(--flag-white); }
.tag-safe{ background:var(--flag-white); color:var(--lake-deep); border-color:var(--lake); }

/* 图片容器基础规则（页面阶段放占位图） */
.media-frame{
  position:relative;
  margin:0;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border:1px solid var(--line);
  background:linear-gradient(160deg,var(--lake-pale),#E9F2F6 58%,var(--cream));
  clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.88) contrast(1.02);
}
.media-frame--wide{ aspect-ratio:21 / 9; }
.media-frame--tall{ aspect-ratio:3 / 4; }

.media-caption{
  margin:10px 0 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--mist);
}

/* ---------- 滚动显现（需 html.js） ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
  transition-delay:calc(var(--d,0) * 90ms);
}
.js [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1180px){
  .header-note{ display:none; }
  .nav-link{ padding:9px 11px; font-size:13.5px; }
  .footer-grid{ grid-template-columns:1.4fr 1fr 1.2fr; }
  .footer-col:last-child{ grid-column:1 / -1; }
}

@media (max-width:960px){
  :root{ --header-h:64px; }

  .site-header{ padding-inline:12px; }

  .header-inner{
    gap:8px;
    padding-inline:12px;
    background:rgba(255,255,255,.92);
  }

  .nav-toggle{ display:inline-flex; }

  .site-nav{
    position:absolute;
    left:0; right:0;
    top:calc(100% + 8px);
    margin:0;
    padding:10px;
    border:1px solid var(--line-strong);
    border-radius:20px;
    background:rgba(255,255,255,.98);
    box-shadow:var(--shadow-float);
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }

  .site-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:none;
  }

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:2px;
  }

  .nav-link{
    display:block;
    padding:12px 14px;
    border-radius:12px;
    font-size:15px;
  }

  .nav-link[aria-current="page"]{
    box-shadow:inset 3px 0 0 var(--earth);
  }

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

  .footer-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:32px 24px;
  }
  .footer-col:last-child{ grid-column:auto; }
}

@media (max-width:640px){
  body{ font-size:16px; }

  .brand-name{ font-size:17px; }
  .brand-sub{ display:none; }
  .brand-mark{ width:34px; height:34px; font-size:11px; }

  .header-actions{ gap:8px; }
  .btn{ min-height:38px; padding:0 14px; font-size:13px; }
  .index-link{ width:36px; height:36px; }
  .nav-toggle{ width:36px; height:36px; }

  .footer-grid{ grid-template-columns:minmax(0,1fr); gap:28px; }
  .footer-desc,
  .footer-note{ max-width:none; }

  .legal-bar{ justify-content:flex-start; }
}

@media (max-width:480px){
  .index-link{ display:none; }
  .brand{ gap:8px; }
}

/* =========================================================
   减弱动效
   ========================================================= */
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }

  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
  }

  .js [data-reveal]{
    opacity:1 !important;
    transform:none !important;
    transition:opacity .15s linear !important;
  }

  .scroll-progress{ transition:none; }
}