:root{
  --bg:#f3f7fc;
  --surface:#ffffff;
  --surface-2:#f8fbff;
  --ink:#142033;
  --muted:#607088;
  --muted-2:#7f8ea5;
  --line:#d9e5f3;
  --line-strong:#c8d8eb;
  --brand:#2563eb;
  --brand-2:#7c3aed;
  --brand-soft:#edf4ff;
  --accent:#0ea5e9;
  --success:#1ea672;
  --shadow-sm:0 10px 30px rgba(18,35,66,.06);
  --shadow-md:0 18px 50px rgba(18,35,66,.1);
  --shadow-lg:0 28px 80px rgba(18,35,66,.14);
  --radius:24px;
  --radius-sm:16px;
  --radius-xs:12px;
  --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:
    radial-gradient(circle at top right, rgba(37,99,235,.10), transparent 28%),
    radial-gradient(circle at top left, rgba(124,58,237,.08), transparent 22%),
    linear-gradient(180deg,#f8fbff 0%, var(--bg) 24%, #f5f7fb 100%);
  font:16px/1.72 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  letter-spacing:.01em;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
::selection{background:rgba(37,99,235,.18)}
main{max-width:var(--max);margin:0 auto;padding:0 20px 64px}
section,article,aside{scroll-margin-top:110px}

.skip-link{position:absolute;left:18px;top:-80px;z-index:200;background:#fff;color:#111;padding:10px 14px;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-sm)}
.skip-link:focus{top:18px}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}

.site-header{
  position:sticky;top:14px;z-index:80;
  max-width:var(--max);margin:16px auto 20px;padding:14px 18px;
  display:flex;align-items:center;justify-content:space-between;gap:22px;
  border:1px solid rgba(217,229,243,.92);border-radius:22px;
  background:rgba(255,255,255,.78);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:0 14px 42px rgba(18,35,66,.08);
}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:900;letter-spacing:-.02em;color:#0f172a;white-space:nowrap}
.brand::before{content:"";width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 0 0 6px rgba(37,99,235,.12)}
.site-header nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.site-header nav a{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:999px;color:#203047;font-size:14px;font-weight:700;transition:.18s ease}
.site-header nav a:hover,.site-header nav a[aria-current="page"]{background:#eef4ff;color:var(--brand)}

.hero{padding-top:8px}
.hero-shell{
  position:relative;overflow:hidden;padding:46px clamp(24px,4vw,52px);
  border:1px solid rgba(212,226,242,.95);border-radius:34px;
  background:
    radial-gradient(circle at 12% 12%, rgba(14,165,233,.18), transparent 18%),
    radial-gradient(circle at 100% 0%, rgba(124,58,237,.17), transparent 30%),
    linear-gradient(135deg,#0f172a 0%, #17355b 32%, #1849a8 68%, #3464f6 100%);
  box-shadow:var(--shadow-lg);
}
.hero-shell::before,.hero-shell::after{content:"";position:absolute;border-radius:50%;filter:blur(8px);opacity:.55;pointer-events:none}
.hero-shell::before{width:280px;height:280px;background:rgba(255,255,255,.08);top:-120px;right:-40px}
.hero-shell::after{width:220px;height:220px;background:rgba(14,165,233,.18);bottom:-110px;left:-70px}
.hero-main{position:relative;z-index:1;max-width:760px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 18px;padding:8px 13px;border-radius:999px;background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.16);font-size:12px;font-weight:800;letter-spacing:.02em;color:#dbebff}
.hero h1,.page-head h1,.article h1{margin:0;line-height:1.02;letter-spacing:-.05em}
.hero h1{max-width:10ch;font-size:clamp(42px,7vw,78px);color:#fff}
.hero h1 span{background:linear-gradient(180deg,#ffffff 0%, #bdddff 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead,.page-head>p,.article .dek{margin:18px 0 0;max-width:62ch;font-size:18px;color:rgba(239,246,255,.9)}
.search-wrap{position:relative;max-width:640px;margin-top:26px}
#site-search{
  width:100%;height:60px;padding:0 20px;border:1px solid rgba(255,255,255,.18);border-radius:18px;
  background:rgba(255,255,255,.12);box-shadow:inset 0 1px 0 rgba(255,255,255,.14), 0 12px 30px rgba(4,12,35,.18);
  color:#fff;font-size:16px;outline:none;transition:.18s ease;
}
#site-search::placeholder{color:rgba(255,255,255,.66)}
#site-search:focus{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.35);box-shadow:0 0 0 4px rgba(147,197,253,.25), 0 14px 36px rgba(4,12,35,.22)}
#search-results{
  display:none;position:absolute;top:calc(100% + 10px);left:0;right:0;z-index:20;
  padding:8px;border:1px solid rgba(211,223,241,.96);border-radius:18px;background:#fff;box-shadow:var(--shadow-md)
}
#search-results a{display:block;padding:12px 14px;border-radius:14px;transition:.15s ease}
#search-results a:hover,#search-results a[aria-selected="true"]{background:#f3f7ff}
#search-results strong{display:block;font-size:15px;color:#152136}
#search-results small,.search-empty small{display:block;margin-top:4px;color:var(--muted)}
.search-empty{padding:14px}
.hero-chips{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:18px;color:#d8e6ff}
.hero-chips span{font-size:13px;font-weight:800;opacity:.88}
.hero-chips a,.chips a,.inline-links a,.context-links a{
  display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid rgba(220,230,255,.22);border-radius:999px;
  background:rgba(255,255,255,.1);font-size:13px;font-weight:700;color:#fff;transition:.16s ease
}
.hero-chips a:hover,.chips a:hover,.inline-links a:hover,.context-links a:hover{transform:translateY(-1px);background:rgba(255,255,255,.18)}

.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin:0 0 20px}
.section-head h2{margin:4px 0 0;font-size:clamp(24px,3.3vw,36px);line-height:1.08;letter-spacing:-.04em}
.section-head span,.section-head>a{color:var(--muted);font-size:14px;font-weight:700}
.section-head>a{color:#325bca}
.section-kicker{margin:0;color:#4d6abf;font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.task-section,.decision-block,.intent-map,.guide-router,.task-router,main>section, main>aside, main>article{margin-top:34px}
.task-grid,.tool-grid,.cat-grid,.guide-grid,.decision-grid{display:grid;gap:18px}
.task-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.task-grid a,.decision-grid>a,.guide-card,.cat-card,.tool-card,.guide-row,.note,.sources,.page-head{
  position:relative;overflow:hidden;background:rgba(255,255,255,.88);border:1px solid rgba(217,229,243,.95);
  border-radius:24px;box-shadow:var(--shadow-sm)
}
.task-grid a,.decision-grid>a,.cat-card,.guide-card,.guide-row{transition:.18s ease}
.task-grid a:hover,.decision-grid>a:hover,.cat-card:hover,.guide-card:hover,.guide-row:hover,.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c6d9f0}
.task-grid a{padding:22px}
.task-grid strong,.decision-grid strong,.cat-card h3,.guide-card h3{display:block;font-size:18px;line-height:1.28;letter-spacing:-.02em}
.task-grid small,.decision-grid span,.cat-card p,.guide-card p,.guide-row p,.note p,.sources li{color:var(--muted);font-size:14px}
.decision-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.decision-grid>a{padding:22px}
.decision-grid span{display:block;margin-top:8px;line-height:1.7}
.tool-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.cat-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.guide-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.tool-card{display:flex;flex-direction:column;gap:12px;padding:22px;min-height:100%;background:linear-gradient(180deg,#fff 0%, #fbfdff 100%)}
.tool-card::after,.cat-card::after,.guide-card::after,.page-head::after{content:"";position:absolute;inset:auto auto -80px -80px;width:160px;height:160px;border-radius:50%;background:radial-gradient(circle, rgba(37,99,235,.09), transparent 60%);pointer-events:none}
.tool-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.tool-card h3,.cat-card h3,.guide-card h3{margin:0;font-size:20px;line-height:1.2;letter-spacing:-.03em}
.tool-card p,.cat-card p,.guide-card p{margin:0;color:var(--muted)}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags span,.chips a{font-size:12px;font-weight:800}
.tags span{display:inline-flex;align-items:center;padding:7px 10px;border-radius:999px;background:#eef5ff;color:#335fc9;border:1px solid #d9e7ff}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;padding-top:4px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border:none;border-radius:999px;
  background:linear-gradient(135deg,var(--brand) 0%, #3970f5 52%, var(--brand-2) 100%);color:#fff;font-size:14px;font-weight:900;
  box-shadow:0 12px 26px rgba(37,99,235,.22);transition:.18s ease
}
.btn:hover{transform:translateY(-1px);box-shadow:0 16px 32px rgba(37,99,235,.28)}
.btn.ghost{background:#eef4ff;color:#2253d5;border:1px solid #dbe7ff;box-shadow:none}
.btn.big{min-height:52px;padding:0 22px;font-size:15px}
.fav{width:40px;height:40px;border:1px solid #dbe7f6;border-radius:12px;background:#fff;color:#f59e0b;font-size:22px;cursor:pointer;box-shadow:0 6px 18px rgba(15,23,42,.06);transition:.15s ease}
.fav:hover{transform:translateY(-1px);border-color:#f6c86b}

.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:10px 0 18px;padding:0 4px;color:var(--muted);font-size:13px;font-weight:700}
.crumb a{color:#3a5fbb}
.page-head{padding:28px clamp(20px,4vw,34px);background:linear-gradient(180deg,#ffffff 0%, #f7fbff 100%)}
.page-head .eyebrow{background:#eef4ff;border-color:#dbe7ff;color:#3c5dbc}
.page-head h1,.page-head>p{color:var(--ink)}
.page-head>p{font-size:17px;color:#536277;max-width:76ch}
.chips,.inline-links,.context-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.page-head .chips a,.page-head .inline-links a,.page-head .context-links a,.inline-links a,.context-links a{background:#eef4ff;border-color:#d9e7ff;color:#335cc7}
.cat-card,.guide-card{display:flex;flex-direction:column;gap:10px;padding:22px;min-height:210px}
.cat-card p,.guide-card p{line-height:1.7}
.guide-list{display:grid;gap:14px}
.guide-row{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:20px}
.guide-row strong{display:block;font-size:17px;line-height:1.35}
.guide-row p{margin:.35em 0 0;line-height:1.65}
.note{padding:22px}
.note h2,.sources h2,.related h2{margin:0 0 12px;font-size:22px;line-height:1.18;letter-spacing:-.03em}
.note-inline{padding:16px 18px;background:#fff8dc;border:1px solid #f2dd95;border-radius:16px}
.sources{padding:24px 26px}
.sources ul{margin:0;padding-left:20px}
.sources li{margin:6px 0}
.sources a{text-decoration:underline;text-decoration-color:#c7d6f7;text-underline-offset:4px;word-break:break-word}

.article{
  padding:28px clamp(20px,4vw,42px) 34px;
  background:linear-gradient(180deg,#ffffff 0%, #fbfdff 100%);
  border:1px solid rgba(217,229,243,.95);border-radius:30px;box-shadow:var(--shadow-md)
}
.article>header{padding-bottom:18px;border-bottom:1px solid #edf3fa;margin-bottom:22px}
.article>header .eyebrow{background:#eef4ff;border-color:#dbe7ff;color:#3a5fbb}
.article>header .dek{color:#4f5f77;max-width:72ch}
.article h2{margin:28px 0 10px;font-size:clamp(24px,3vw,31px);line-height:1.18;letter-spacing:-.04em}
.article h3{margin:22px 0 8px;font-size:20px;line-height:1.24;letter-spacing:-.02em}
.article p,.article li{color:#3f4c61}
.article p{margin:0 0 14px}
.article ol,.article ul{padding-left:22px;margin:12px 0 18px}
.article li{margin:8px 0}
.primary-action{margin-top:20px}
.article-extra{margin-top:22px;padding:22px 24px;border:1px solid #dde9f5;border-radius:22px;background:#f8fbff}
.related{margin-top:26px;padding:24px 26px;border:1px solid #dbe7f3;border-radius:24px;background:linear-gradient(180deg,#fbfdff 0%, #f4f8ff 100%)}
.related a{display:block;padding:14px 0;border-bottom:1px solid #e6eef8;color:#2449a7;font-weight:800}
.related a:last-child{border-bottom:none;padding-bottom:0}
.related-tools a span{display:block;margin-top:4px;color:var(--muted);font-size:13px;font-weight:500}
.table-wrap{overflow:auto;margin:18px 0 26px;border:1px solid #dbe7f3;border-radius:20px;background:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.6)}
.article table{width:100%;min-width:620px;border-collapse:collapse}
.article th,.article td{padding:14px 16px;text-align:left;vertical-align:top;border-bottom:1px solid #e6eef8;font-size:14px;line-height:1.72}
.article th{background:#f4f8ff;color:#314560;font-size:12px;font-weight:900;letter-spacing:.04em;text-transform:uppercase}
.article tbody tr:last-child td{border-bottom:0}
.flow-line{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:20px 0 26px;padding:16px 18px;border:1px dashed #cfddf1;border-radius:18px;background:#f9fbff}
.flow-line span{padding:8px 11px;border-radius:10px;background:#eef4ff;color:#355fca;font-size:13px;font-weight:900}
.flow-line b{color:#94a3b8}

.sponsor-card{
  position:relative;overflow:hidden;margin-top:34px;padding:0;border:1px solid rgba(22,34,58,.12);border-radius:30px;
  background:#0f172a;box-shadow:var(--shadow-lg)
}
.sponsor-card::before{
  content:"";display:block;aspect-ratio:1200/267;
  background:
    linear-gradient(180deg, rgba(8,12,25,.12) 10%, rgba(8,12,25,.38) 100%),
    url('/assets/huyue-banner.jpg') center/cover no-repeat;
}
.sponsor-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(5,10,25,0) 40%, rgba(5,10,25,.78) 100%);pointer-events:none}
.sponsor-ribbon{position:absolute;left:18px;top:18px;z-index:3}
.sponsor-label{display:inline-flex;align-items:center;min-height:28px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:12px;font-weight:900;backdrop-filter:blur(8px)}
.sponsor-main{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
  display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:16px;
  padding:18px 20px;border-radius:22px;border:1px solid rgba(255,255,255,.18);
  background:rgba(8,14,30,.54);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)
}
.sponsor-brandbox{display:none}
.sponsor-copy{min-width:0}
.sponsor-copy .sponsor-title{margin:0;font-size:clamp(18px,2.2vw,30px);line-height:1.14;letter-spacing:-.03em;color:#fff;font-weight:900}
.sponsor-copy p{margin:8px 0 0;max-width:72ch;color:rgba(233,241,255,.9);font-size:14px;line-height:1.65}
.sponsor-note{display:block;margin-top:10px;color:#d2def6;font-size:11px;line-height:1.6}
.sponsor-action{text-align:right}
.sponsor-action>a{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:168px;min-height:48px;padding:0 18px;border-radius:999px;background:#fff;color:#173f86;font-weight:900;box-shadow:0 12px 32px rgba(2,6,23,.25);transition:.16s ease}
.sponsor-action>a:hover{transform:translateY(-1px);background:#eff6ff}
.sponsor-action small{display:block;margin-top:8px;color:#d9e4f7;font-size:11px}
.article .sponsor-card{margin:30px 0}

footer{
  max-width:var(--max);margin:34px auto 0;padding:26px 20px 42px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;
  color:var(--muted);border-top:1px solid #dde8f4
}
footer strong{display:block;margin-bottom:6px;color:#18263a;font-size:18px;letter-spacing:-.02em}
footer p{margin:0;max-width:60ch}
.footer-links{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-start}
.footer-links a{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid #dde8f4;color:#27448a;font-size:13px;font-weight:800;box-shadow:var(--shadow-sm)}

.not-found{max-width:760px;padding:90px 0}
.search-empty{color:var(--muted)}
.tool-card:target{outline:3px solid rgba(37,99,235,.32);outline-offset:4px}
:target{scroll-margin-top:110px}

@media (max-width:1024px){
  .site-header{margin:14px 18px 20px}
  .task-grid,.decision-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:800px){
  .site-header{top:10px;padding:12px 14px;gap:12px}
  .site-header nav{gap:6px;overflow:auto;flex-wrap:nowrap;justify-content:flex-start;width:100%;padding-bottom:2px}
  .site-header nav a{flex:0 0 auto;padding:0 12px;font-size:13px}
  .site-header{flex-direction:column;align-items:flex-start}
  .hero-shell{padding:34px 20px 28px;border-radius:28px}
  .hero h1{max-width:none}
  .task-grid,.decision-grid{grid-template-columns:1fr}
  .section-head{align-items:flex-start;flex-direction:column}
  .page-head,.article{border-radius:26px}
  .sponsor-main{left:14px;right:14px;bottom:14px;padding:16px;grid-template-columns:1fr}
  .sponsor-action{text-align:left}
  .sponsor-action>a{min-width:0;width:100%}
  footer{grid-template-columns:1fr}
}
@media (max-width:640px){
  main{padding:0 14px 54px}
  .site-header{margin:12px 12px 16px;border-radius:18px}
  .hero h1,.page-head h1,.article h1{font-size:36px}
  .lead,.page-head>p,.article .dek{font-size:16px}
  #site-search{height:54px;border-radius:16px}
  .tool-grid,.cat-grid,.guide-grid{grid-template-columns:1fr}
  .tool-card,.cat-card,.guide-card,.task-grid a,.decision-grid>a,.guide-row,.page-head,.note,.sources,.related{border-radius:20px}
  .article{padding:22px 16px 26px;border-radius:22px}
  .article h2{font-size:24px}
  .article-extra{padding:18px 16px;border-radius:18px}
  .table-wrap{border-radius:16px}
  .article table{min-width:560px}
  .sponsor-card{border-radius:22px}
  .sponsor-card::before{aspect-ratio:4/5;background-position:center top}
  .sponsor-main{position:relative;left:auto;right:auto;bottom:auto;margin:-76px 12px 12px;border-radius:18px}
  .sponsor-copy .sponsor-title{font-size:20px}
  .sponsor-copy p{font-size:13px}
  .sponsor-note{font-size:10px}
}

:root{
  --bg:#f6f8fc;--surface:#fff;--surface-2:#f8faff;
  --ink:#17243b;--muted:#637188;--line:#e3e9f3;--line-strong:#d4dfeb;
  --brand:#2563eb;--brand-2:#316ee7;--brand-soft:#eff5ff;
  --shadow-sm:0 3px 12px rgba(25,44,79,.035);
  --shadow-md:0 12px 30px rgba(25,44,79,.075);
  --shadow-lg:0 18px 46px rgba(25,44,79,.09);
  --radius:20px;--radius-sm:15px;
}
body{background:var(--bg);color:#17243b;font-size:15px;line-height:1.72;letter-spacing:0}
main{max-width:1220px;padding-bottom:72px}
.site-header{
  position:sticky;top:0;margin:0 auto 16px;max-width:none;
  padding:0 max(20px,calc((100vw - 1180px)/2));min-height:74px;
  border:0;border-bottom:1px solid #e7ecf3;border-radius:0;
  background:rgba(255,255,255,.96);box-shadow:none;backdrop-filter:blur(12px)
}
.brand{font-size:19px;letter-spacing:-.04em;gap:13px}
.brand::before{width:28px;height:28px;border-radius:10px;box-shadow:none;background:linear-gradient(135deg,#2563eb,#5188ff);content:'↗';color:white;text-align:center;line-height:28px;font-weight:800;font-size:18px}
.site-header nav{gap:2px;align-items:center}
.site-header nav a{padding:0 13px;font-weight:600;font-size:14px;min-height:38px;color:#4b5870}
.site-header nav a:hover,.site-header nav a[aria-current="page"]{background:#eef4ff;color:#2059d6}
.favorites-trigger{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid #d9e4f6;border-radius:999px;background:#f7faff;padding:9px 13px;color:#245bcf;font:700 13px/1.3 inherit;cursor:pointer;white-space:nowrap;transition:background .15s ease}
.favorites-trigger:hover{background:#eaf2ff}
.favorites-trigger:focus-visible,.sponsor-zoom:focus-visible,.sponsor-visit:focus-visible,.fav:focus-visible,.btn:focus-visible,a:focus-visible{outline:3px solid #80adff;outline-offset:3px}

.hero{padding-top:10px;margin-top:0}
.hero-shell{padding:56px clamp(24px,5.2vw,70px) 52px;border:1px solid #e3eaf6;border-radius:26px;background:linear-gradient(112deg,#fafdff 0%,#eaf3ff 60%,#e9efff 100%);box-shadow:none}
.hero-shell::before{width:470px;height:470px;right:-200px;top:-170px;background:radial-gradient(circle,rgba(37,99,235,.14),transparent 67%);filter:none;opacity:1}
.hero-shell::after{width:350px;height:350px;left:auto;right:12%;bottom:-240px;background:radial-gradient(circle,rgba(56,189,248,.12),transparent 68%);filter:none;opacity:1}
.hero-main{max-width:720px}
.hero .eyebrow{background:#e9f1ff;color:#2760cd;border:1px solid #d4e3fb;letter-spacing:.015em}
.hero h1{font-size:clamp(42px,6vw,68px);max-width:none;line-height:1.11;color:#12213a;letter-spacing:-.055em}
.hero h1 span{background:none;-webkit-background-clip:initial;background-clip:initial;color:#2563eb}
.hero .lead{font-size:17px;color:#59667a;margin-top:22px;max-width:57ch}
#site-search{height:60px;background:#fff;color:#17243b;border:1px solid #cfdef3;border-radius:14px;box-shadow:0 6px 24px rgba(23,62,124,.07);font-size:16px;padding-left:52px}
#site-search::placeholder{color:#8996ab}
#site-search:focus{background:#fff;border-color:#5188f8;box-shadow:0 0 0 4px rgba(37,99,235,.1)}
.search-wrap::before{content:'⌕';position:absolute;z-index:1;left:18px;top:10px;color:#5c83d1;font-size:29px;line-height:40px;pointer-events:none}
.hero-chips{color:#66758d;gap:8px}
.hero-chips span{color:#71809a}
.hero-chips a{background:#fff;color:#3460b5;border:1px solid #dce6f6;font-weight:700;box-shadow:none}
.hero-chips a:hover{background:#eaf1ff;color:#235bd3}

.task-section,.decision-block,.intent-map,.guide-router,.task-router,main>section,main>aside,main>article{margin-top:40px}
.section-head{margin-bottom:18px}
.section-head h2{font-size:clamp(23px,3vw,31px);letter-spacing:-.035em}
.section-head>a{color:#2563eb}
.section-kicker{color:#4e76b9;letter-spacing:.06em}
.task-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.task-grid a,.decision-grid>a,.cat-card,.guide-card,.guide-row,.tool-card{border:1px solid #e2e9f2;border-radius:18px;background:#fff;box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s,transform .15s}
.task-grid a:hover,.decision-grid>a:hover,.cat-card:hover,.guide-card:hover,.guide-row:hover,.tool-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#bcd0ed}
.task-grid a{padding:22px 20px;min-height:160px}
.task-grid strong{font-size:17px;color:#162741}
.task-grid small{font-size:13px;margin-top:8px;display:block}
.category-icon{display:inline-grid;place-items:center;width:40px;height:40px;margin-bottom:13px;border-radius:12px;background:#eff5ff;color:#2962cb;font-size:23px;line-height:1;font-weight:700}
.task-grid a:nth-child(2) .category-icon,.cat-grid .cat-card:nth-child(2) .category-icon{background:#f1edff;color:#7649b7}
.task-grid a:nth-child(3) .category-icon,.cat-grid .cat-card:nth-child(3) .category-icon{background:#eaf8f0;color:#188c68}
.task-grid a:nth-child(4) .category-icon,.cat-grid .cat-card:nth-child(4) .category-icon{background:#fff5e9;color:#bb721a}
.task-grid a:nth-child(5) .category-icon,.cat-grid .cat-card:nth-child(5) .category-icon{background:#eaf5ff;color:#2680bb}
.task-grid a:nth-child(6) .category-icon,.cat-grid .cat-card:nth-child(6) .category-icon{background:#e7f5f9;color:#1387a2}
.decision-grid{gap:14px}
.decision-grid>a{padding:23px}
.decision-grid strong{font-size:16px}
.decision-grid span{font-size:13px}

.tool-grid,.cat-grid,.guide-grid{gap:14px}
.tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.tool-card{padding:20px;gap:12px;background:#fff;min-height:220px}
.tool-card::after,.cat-card::after,.guide-card::after,.page-head::after{display:none}
.tool-identity{display:flex;align-items:center;gap:12px;min-width:0}
.tool-identity h3{font-size:17px;line-height:1.25;overflow-wrap:anywhere}
.tool-avatar{display:grid;place-items:center;flex:0 0 42px;width:42px;height:42px;border-radius:12px;background:#e9f1ff;color:#2458c6;font-size:20px;font-weight:800;line-height:1}
.avatar-1{background:#f3ebff;color:#7244bd}.avatar-2{background:#ecf9f1;color:#168c63}.avatar-3{background:#fff2ea;color:#bc652d}.avatar-4{background:#edf8ff;color:#247cae}.avatar-5{background:#faedf4;color:#b45480}
.tool-card p{font-size:13px;line-height:1.7;color:#5e6c80}
.tags{gap:6px}
.tags span{background:#f3f6fb;border-color:#edf1f7;color:#61738c;font-size:11px;font-weight:600;padding:5px 9px}
.actions{gap:8px}
.btn{min-height:40px;padding:0 15px;border-radius:10px;font-size:12px;font-weight:800;background:#2563eb;box-shadow:none}
.btn:hover{box-shadow:none;background:#1e55d5;transform:translateY(-1px)}
.btn.ghost{background:#f3f7ff;color:#2c61cb;border:1px solid #dfe9fa}
.btn.big{min-height:48px;border-radius:12px;font-size:14px}
.fav{width:36px;height:36px;flex:0 0 36px;border-radius:10px;border:1px solid #e4eaf2;color:#e8a12d;background:#fff;box-shadow:none;font-size:20px}
.cat-card,.guide-card{padding:23px;min-height:0}
.cat-card h3,.guide-card h3{font-size:18px}

.crumb{margin:14px 0 17px;font-size:13px}
.page-head{padding:29px clamp(20px,4vw,42px);background:#fff;border:1px solid #e2e9f2;border-radius:22px;box-shadow:none}
.page-head h1{font-size:clamp(30px,4vw,46px);line-height:1.2;color:#17243b}
.page-head>p{font-size:15px;color:#536378;max-width:85ch}
.page-intro{display:block;margin:0 0 14px;color:#466eb5;font-size:13px;line-height:1.7;font-weight:600;max-width:100ch}
.page-head .chips a,.page-head .inline-links a,.page-head .context-links a,.inline-links a,.context-links a{background:#f2f6fd;border:1px solid #e2e9f3;color:#3863b1;border-radius:10px;padding:8px 11px}
.article{max-width:960px;margin-left:auto!important;margin-right:auto!important;padding:34px clamp(22px,5vw,56px) 46px;background:#fff;border:1px solid #e2e9f2;border-radius:22px;box-shadow:none}
.article>header{margin-bottom:27px;padding-bottom:24px}
.article h1{font-size:clamp(31px,4vw,45px);line-height:1.2;letter-spacing:-.036em}
.article h2{margin:35px 0 13px;font-size:clamp(21px,2.7vw,27px);line-height:1.35;letter-spacing:-.025em}
.article h3{font-size:18px}
.article p,.article li{color:#3f4c60;font-size:15px;line-height:1.9}
.article .dek{font-size:16px;line-height:1.8;color:#607086}
.article-extra,.related,.sources,.note{background:#f9fbff;border:1px solid #e3eaf4;border-radius:16px;box-shadow:none}
.article-extra{padding:24px}
.related{padding:24px}
.related h2,.sources h2{font-size:20px}
.table-wrap{border-radius:13px;border-color:#e3eaf4;box-shadow:none}
.article th,.article td{padding:12px 13px;line-height:1.8}
.article th{background:#f4f7fc}
.guide-row{border-radius:15px}


.sponsor-card{display:block;margin:36px 0;border:1px solid #dee6f1;border-radius:16px;background:#fff;box-shadow:var(--shadow-sm);overflow:hidden}
.sponsor-card::before,.sponsor-card::after{display:none!important;content:none!important}
.sponsor-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 15px;background:#f9fbfe;border-bottom:1px solid #edf1f7}
.sponsor-head .sponsor-label{position:static;display:inline-flex;align-items:center;min-height:24px;padding:0 9px;border-radius:7px;border:1px solid #dbe2ed;background:#fff;color:#5f6e83;font-size:11px;font-weight:700;backdrop-filter:none}
.sponsor-kind{color:#758399;font-size:12px}
.sponsor-image-link{display:block;position:relative;line-height:0;background:#10131d}
.sponsor-image-link picture{display:block;width:100%;height:auto}
.sponsor-image-link img{display:block;width:100%;height:auto;aspect-ratio:6 / 1;object-fit:contain;background:#10131d}
.sponsor-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:15px 17px;background:#fff}
.sponsor-meta{display:grid;gap:3px;min-width:0}
.sponsor-meta strong{font-size:14px;color:#24334a;font-weight:800;line-height:1.5}
.sponsor-meta span{font-size:11px;color:#758298;line-height:1.6}
.sponsor-actions{display:flex;align-items:center;gap:9px;flex-shrink:0}
.sponsor-zoom,.sponsor-visit{display:inline-flex;align-items:center;justify-content:center;border:1px solid #dbe5f2;background:#f5f8ff;color:#2a5ac1;border-radius:9px;padding:9px 12px;min-height:38px;font-size:12px;font-weight:800;cursor:pointer;white-space:nowrap;line-height:1.3}
.sponsor-visit{background:#2563eb;border-color:#2563eb;color:#fff}
.sponsor-visit:hover{background:#1d56d2}
.sponsor-zoom:hover{background:#eaf2ff}
.article .sponsor-card{margin:36px 0}

.sponsor-lightbox{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:20px;background:rgba(10,19,37,.84)}
.sponsor-lightbox[hidden]{display:none}
.sponsor-lightbox-panel{position:relative;width:min(1280px,100%);max-height:90vh;overflow:hidden;border-radius:14px;background:#fff;box-shadow:0 28px 70px rgba(0,0,0,.3)}
.sponsor-lightbox-scroll{overflow:auto;max-height:80vh;background:#10131d}
.sponsor-lightbox-scroll img{display:block;width:100%;height:auto;max-width:none}
.sponsor-lightbox-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 15px;gap:10px;font-size:12px;color:#5d6c82}
.sponsor-lightbox-close{border:1px solid #dce6f2;border-radius:8px;background:#f6f9fe;padding:8px 12px;color:#183c80;cursor:pointer;font-weight:800}
body.dialog-open{overflow:hidden}

.favorites-panel{position:fixed;inset:0;z-index:180;display:flex;justify-content:flex-end;background:rgba(17,31,54,.44)}
.favorites-panel[hidden]{display:none}
.favorites-drawer{width:min(440px,100%);height:100%;overflow:auto;padding:24px;background:#fff;box-shadow:-12px 0 40px rgba(20,34,61,.15)}
.favorites-drawer h2{margin:0 0 3px;font-size:25px;letter-spacing:-.03em}
.favorites-drawer p{margin:0 0 22px;color:#66758b;font-size:13px}
.favorites-drawer-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.favorites-close{border:1px solid #dde5f2;border-radius:10px;background:#f7faff;padding:8px 12px;font-weight:800;cursor:pointer;color:#244a90}
.favorites-list{display:grid;gap:9px}
.favorites-list a{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;border-radius:12px;border:1px solid #e2e9f3;background:#fbfcff;color:#244a91;font-weight:700}
.favorites-empty{padding:20px;border-radius:12px;background:#f5f8fc;color:#61718a;font-size:14px}
.favorites-list button{border:0;background:transparent;cursor:pointer;color:#62728c;font-size:12px;white-space:nowrap}

footer{border-top:1px solid #e2e9f2;margin-top:26px;box-shadow:none}
.footer-links a{box-shadow:none;border-radius:10px}
@media(max-width:1080px){
 .site-header{padding:11px 18px;gap:16px;min-height:65px}
 .tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:800px){
 .site-header{top:0;position:relative;flex-direction:column;align-items:stretch;gap:8px;border-bottom:1px solid #e6ebf4;border-radius:0;margin:0 0 16px;padding:13px 17px 8px;background:#fff}
 .site-header nav{width:100%;display:flex;gap:4px;overflow-x:auto;flex-wrap:nowrap;padding:0 0 7px;scrollbar-width:thin;justify-content:flex-start}
 .site-header nav a,.favorites-trigger{flex:0 0 auto;font-size:13px;padding:8px 11px;min-height:36px}
 .hero-shell{padding:33px 25px 36px}
 .hero h1{font-size:clamp(38px,6.5vw,56px)}
 .task-grid,.decision-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .sponsor-bottom{align-items:flex-start}
}
@media(max-width:640px){
 body{font-size:14px;background:#f7f9fd}
 main{padding:0 14px 50px}
 .hero{margin-top:0;padding-top:0}
 .hero-shell{padding:27px 20px 30px;border-radius:18px}
 .hero h1{font-size:clamp(34px,10vw,44px)}
 .hero h1 br{display:block}
 .hero .lead{font-size:14px;margin-top:17px}
 .hero .eyebrow{font-size:11px;padding:7px 10px}
 #site-search{height:53px;font-size:14px;padding-left:45px}
 .search-wrap::before{left:14px;top:7px}
 .hero-chips{gap:6px}
 .hero-chips a{font-size:11px;padding:7px 9px}
 .task-section,.decision-block,.intent-map,.guide-router,.task-router,main>section,main>aside,main>article{margin-top:28px}
 .section-head{align-items:flex-start;flex-direction:column;gap:7px;margin-bottom:15px}
 .section-head h2{font-size:23px}
 .task-grid,.decision-grid,.tool-grid,.cat-grid,.guide-grid{grid-template-columns:1fr;gap:11px}
 .task-grid a{min-height:0;display:grid;grid-template-columns:44px 1fr;column-gap:13px;align-items:center;padding:15px}
 .task-grid a .category-icon{grid-row:span 2;margin-bottom:0}
 .task-grid strong{font-size:15px}
 .task-grid small{margin-top:2px;font-size:12px}
 .decision-grid>a{padding:18px}
 .tool-card{padding:18px;min-height:0}
 .page-head{padding:21px 18px;border-radius:17px}
 .page-head h1{font-size:30px}
 .page-head>p{font-size:14px}
 .page-intro{font-size:12px}
 .article{padding:23px 18px 30px;border-radius:16px}
 .article h1{font-size:30px}
 .article h2{font-size:23px}
 .article p,.article li{font-size:14px;line-height:1.82}
 .article .dek{font-size:14px}
 .article table{min-width:530px}
 .article-extra{padding:18px}
 .sponsor-card{border-radius:12px;margin:26px 0}
 .sponsor-head{padding:8px 10px}
 .sponsor-image-link img{aspect-ratio:6/1;object-fit:contain}
 .sponsor-bottom{padding:13px 12px;display:grid;gap:13px}
 .sponsor-meta strong{font-size:13px}
 .sponsor-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;width:100%}
 .sponsor-visit,.sponsor-zoom{min-width:0;width:100%;padding:10px 8px}
 .sponsor-lightbox{padding:10px}
 .sponsor-lightbox-panel{width:100%}
 .sponsor-lightbox-scroll img{width:1080px;max-width:none}
 footer{margin-top:15px;padding:22px 14px 30px;gap:15px}
 .footer-links{gap:8px}
 .footer-links a{font-size:12px;min-height:36px;padding:0 10px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
.favorite-row{display:flex;align-items:center;gap:8px}
.favorite-row a{flex:1;min-width:0;overflow-wrap:anywhere}
.favorite-row button{border:1px solid #e1e7f0;border-radius:9px;background:#f8faff;color:#64748b;padding:10px 12px;cursor:pointer;font-size:12px;font-weight:700}
.favorite-row button:hover{background:#f0f5fd;color:#2454b8}
.favorites-trigger{font-family:inherit;font-size:13px;font-weight:700;line-height:1.3}


.nav-search{color:#245bcf!important;background:#f2f6ff!important}
.favorite-count{display:none;min-width:18px;height:18px;padding:0 5px;border-radius:999px;background:#2563eb;color:#fff;font:700 11px/18px -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;text-align:center}
.favorite-count:not(:empty){display:inline-block}
.article-toc{margin:12px 0 28px;padding:14px 20px;border:1px solid #dce6f3;border-radius:14px;background:#f8fbff}
.article-toc summary{cursor:pointer;color:#2754ae;font-size:15px;font-weight:800;list-style-position:inside}
.article-toc[open] summary{margin-bottom:11px}
.article-toc ol{margin:0 0 0 6px;padding-left:20px;columns:2;column-gap:32px}
.article-toc li{break-inside:avoid;line-height:1.5;margin:6px 0;font-size:13px}
.article-toc a{color:#425e92;text-decoration:none}
.article-toc a:hover{text-decoration:underline;text-underline-offset:4px;color:#1d56d6}
.article h2[id]{scroll-margin-top:95px}
.search-wrap:focus-within{z-index:20}
#search-results a:focus-visible{outline:2px solid #5188f8;outline-offset:-2px;background:#edf4ff}
.favorites-drawer:focus{outline:none}
.favorites-drawer .favorites-list{max-height:calc(100vh - 155px);overflow:auto}
.sponsor-lightbox-panel:focus{outline:none}
@media(max-width:640px){
  .article-toc{padding:12px 15px;margin:12px 0 22px}
  .article-toc ol{columns:1}
  .site-header nav .nav-search{order:-2}
  .article h2[id]{scroll-margin-top:20px}
}
@media(prefers-reduced-motion:reduce){.tool-card:hover,.task-grid a:hover,.cat-card:hover{transform:none}}

/* Task-based selection cards */
.choice-guide{margin:24px 0 30px;padding:24px;border:1px solid #dce6f3;border-radius:22px;background:#f7faff}
.choice-guide>h2{margin:0 0 14px;font-size:20px;line-height:1.35;color:#17243b}
.choice-guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.choice-guide-item{display:block;padding:16px;border:1px solid #dce6f3;border-radius:16px;background:white;transition:box-shadow .18s,transform .18s,border-color .18s}
.choice-guide-item:hover{transform:translateY(-2px);border-color:#b6cbeb;box-shadow:0 12px 26px rgba(22,45,80,.08)}
.choice-guide-item strong{display:block;font-size:14px;line-height:1.45;color:#234cb5}
.choice-guide-item span{display:block;margin-top:7px;color:#58677b;font-size:13px;line-height:1.6}
@media(max-width:800px){.choice-guide-grid{grid-template-columns:1fr}.choice-guide{padding:18px 15px}}
/* Keyboard focus and search accessibility */
:where(a,button,input,summary):focus-visible{outline:3px solid #4d83ea;outline-offset:3px}
#search-results[role="listbox"]{max-height:min(420px,55vh);overflow-y:auto;overscroll-behavior:contain}
.favorites-list .favorite-row button:focus-visible,.sponsor-lightbox-close:focus-visible{outline:3px solid #4d83ea;outline-offset:2px}
@media (max-width:640px){#search-results[role="listbox"]{max-height:45vh}}

/* Keyboard and motion accessibility */
:where(a, button, input, summary):focus-visible{outline:3px solid #2563eb;outline-offset:3px}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* 搜索无结果与离线降级导航 */
.search-empty a{display:inline-flex!important;align-items:center;margin:8px 8px 0 0;padding:8px 12px;border:1px solid #d5e4fa;border-radius:999px;background:#eef5ff;color:#2354b5;font-size:13px;font-weight:700}.search-empty a:hover,.search-empty a:focus-visible{background:#e0edff;outline-offset:2px}

/* Search entrance and responsive sponsor placement */
.search-wrap{scroll-margin-top:32px}
.sponsor-card{clear:both;max-width:100%;}
.sponsor-image-link picture{display:block;line-height:0}
.sponsor-image-link img{display:block;width:100%;height:auto;aspect-ratio:6/1;object-fit:contain}
@media(max-width:640px){.sponsor-image-link img{width:100%;height:auto;object-fit:contain}}

/* Category-level editorial guidance is separate from product cards. */
.category-insight{margin:22px 0 6px;padding:22px 26px;border:1px solid #dbe7f3;border-radius:20px;background:#f7faff;box-shadow:0 4px 18px rgba(26,44,78,.035)}
.category-insight h2{font-size:clamp(18px,2.4vw,23px);line-height:1.35;letter-spacing:-.025em;margin:0 0 10px;color:#172b47}
.category-insight p{margin:8px 0 0;max-width:86ch;color:#485a73;font-size:14px;line-height:1.85}
.related .related-destination{display:inline-flex;vertical-align:middle;line-height:1.4;margin-left:8px;padding:3px 7px;border-radius:6px;background:#edf3fb;color:#657690;font-weight:600;font-size:11px}
@media(max-width:640px){.category-insight{padding:18px 16px;border-radius:16px}}

/* 友情链接 */
footer .friend-links{grid-column:1 / -1;display:flex;align-items:center;flex-wrap:wrap;gap:12px 20px;padding-top:18px;border-top:1px solid #e3eaf4}
footer .friend-links-title{flex:0 0 auto;color:#596b82;font-size:13px;font-weight:800}
footer .friend-links-list{display:flex;align-items:center;flex-wrap:wrap;gap:8px 20px}
footer .friend-links-list a{display:inline-flex;align-items:center;min-height:32px;padding:2px 0;color:#335dc0;font-size:13px;font-weight:650;text-decoration:none}
footer .friend-links-list a:hover{text-decoration:underline;text-underline-offset:3px}
footer .friend-links-list a:focus-visible{outline:2px solid #2563eb;outline-offset:3px;border-radius:3px}
@media(max-width:640px){footer .friend-links{gap:8px;padding-top:14px}footer .friend-links-title{width:100%}footer .friend-links-list{gap:4px 16px}}

/* Search dropdown must extend beyond the hero and overlay subsequent sections. */
.hero{position:relative;z-index:15}
.hero-shell{overflow:visible}
.hero .search-wrap{position:relative;z-index:16}
.hero #search-results{z-index:30;box-shadow:0 18px 48px rgba(24,49,89,.19);border-color:#d6e3f5}
.hero #search-results[role="listbox"]{max-height:min(420px,55vh);overflow-y:auto;overscroll-behavior:contain}
@media(max-width:640px){.hero #search-results[role="listbox"]{max-height:min(360px,48vh)}}
/* Decorative hero glows may extend past the viewport; clip only horizontally. */
body{overflow-x:clip}
/* Keep decorative gradients inside their rounded hero container. */
.hero-shell::before{top:0;right:0;width:min(470px,100%);height:100%}
.hero-shell::after{left:auto;right:5%;bottom:0;width:35%;height:65%}