:root{--c-primary:#ff6f91;--c-primary-deep:#d94f70;--c-primary-dark:#c23a5c;--c-accent:#ff9db4;--c-bg:#fff8fa;--c-bg-alt:#ffffff;--c-surface:rgba(255,255,255,.72);--c-surface-solid:#ffffff;--c-border:#f3d6de;--c-border-soft:#f0cdd8;--c-text:#2d2d2d;--c-text-soft:#3a3a3a;--c-text-muted:#999999;--c-heading:#c23a5c;--c-footer-bg:#3a2a30;--c-footer-text:#f5e6ea;--c-footer-muted:#c9aeb6;--c-footer-link:#ffb6c8;--shadow-sm:0 2px 8px rgba(217,79,112,.12);--shadow-md:0 8px 24px rgba(217,79,112,.14);--shadow-lg:0 16px 40px rgba(217,79,112,.18);--radius-sm:10px;--radius:14px;--radius-lg:20px;--radius-pill:999px;--ease:cubic-bezier(.22,.61,.36,1);--dur:.35s;--maxw:1200px}
@media(prefers-color-scheme:dark){:root{--c-bg:#171215;--c-bg-alt:#1f181c;--c-surface:rgba(42,32,38,.66);--c-surface-solid:#241c21;--c-border:#3a2b33;--c-border-soft:#3d2d36;--c-text:#f2e9ec;--c-text-soft:#d9ccd1;--c-text-muted:#9c8b92;--c-heading:#ff9db4;--c-footer-bg:#120d10;--c-footer-text:#f5e6ea;--c-footer-muted:#a98f98;--c-footer-link:#ffb6c8;--shadow-sm:0 2px 8px rgba(0,0,0,.4);--shadow-md:0 8px 24px rgba(0,0,0,.45);--shadow-lg:0 16px 40px rgba(0,0,0,.5)}}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--c-text);background:var(--c-bg);line-height:1.8;font-size:16px;overflow-x:hidden;transition:background var(--dur) var(--ease),color var(--dur) var(--ease)}
body::before{content:"";position:fixed;inset:0;z-index:-1;background:radial-gradient(1200px 600px at 10% -10%,rgba(255,111,145,.14),transparent 60%),radial-gradient(900px 500px at 100% 0,rgba(255,157,180,.16),transparent 55%),radial-gradient(800px 600px at 50% 110%,rgba(255,211,224,.2),transparent 60%);pointer-events:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary-deep);text-decoration:none;transition:color var(--dur) var(--ease),opacity var(--dur) var(--ease)}
a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
a:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,111,145,.28);color:var(--c-heading)}
header{position:sticky;top:0;z-index:100;background:var(--c-surface);-webkit-backdrop-filter:saturate(180%) blur(16px);backdrop-filter:saturate(180%) blur(16px);box-shadow:var(--shadow-sm);border-bottom:1px solid var(--c-border);transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.nav-wrap{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px}
.logo{font-size:22px;font-weight:700;color:var(--c-primary-deep);letter-spacing:.5px;position:relative;padding-left:26px;white-space:nowrap;transition:transform var(--dur) var(--ease),color var(--dur) var(--ease)}
.logo::before{content:"";position:absolute;left:0;top:50%;width:16px;height:16px;transform:translateY(-50%);border-radius:50% 50% 50% 0;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));box-shadow:0 0 0 4px rgba(255,111,145,.18);animation:logoPulse 3.2s ease-in-out infinite}
.logo:hover{transform:scale(1.04);color:var(--c-primary)}
@keyframes logoPulse{0%,100%{box-shadow:0 0 0 4px rgba(255,111,145,.18)}50%{box-shadow:0 0 0 9px rgba(255,111,145,.05)}}
nav ul{list-style:none;display:flex;gap:18px;flex-wrap:wrap;align-items:center}
nav a{font-size:15px;color:var(--c-text-soft);position:relative;padding:4px 2px;transition:color var(--dur) var(--ease)}
nav a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
nav a:hover{color:var(--c-primary-deep);text-decoration:none}
nav a:hover::after{transform:scaleX(1)}
main{max-width:var(--maxw);margin:0 auto;padding:0 20px}
section{padding:36px 0;border-bottom:1px solid var(--c-border);scroll-margin-top:88px;opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
section.is-visible{opacity:1;transform:translateY(0)}
h1{font-size:28px;color:var(--c-primary-dark);margin-bottom:14px;line-height:1.4;letter-spacing:.3px}
h2{font-size:23px;color:var(--c-heading);margin-bottom:14px;border-left:5px solid var(--c-accent);padding-left:12px;line-height:1.45;position:relative}
h2::after{content:"";position:absolute;left:-5px;bottom:-1px;width:5px;height:0;background:linear-gradient(180deg,var(--c-primary),var(--c-accent));border-radius:3px;animation:barGrow 1.1s var(--ease) forwards}
@keyframes barGrow{to{height:100%}}
h3{font-size:18px;color:var(--c-heading);margin:16px 0 8px;line-height:1.5}
h4{font-size:16px;color:var(--c-primary-deep);margin:12px 0 6px;line-height:1.5}
p{margin-bottom:12px;font-size:15px;color:var(--c-text-soft)}
ul,ol{margin:10px 0 14px 22px}
li{margin-bottom:6px;font-size:15px;color:var(--c-text-soft)}
strong{color:var(--c-primary-deep);font-weight:700}
.banner{position:relative;overflow:hidden;background:linear-gradient(135deg,#ffd3e0 0%,#ffe9f0 45%,#fff3f7 100%);border-radius:var(--radius-lg);padding:30px 26px;margin-top:20px;border:1px solid rgba(255,255,255,.6);box-shadow:var(--shadow-md);animation:fadeUp .8s var(--ease) both}
.banner::before{content:"";position:absolute;width:280px;height:280px;right:-90px;top:-120px;border-radius:50%;background:radial-gradient(circle,rgba(255,111,145,.35),transparent 70%);filter:blur(6px);animation:floatBlob 9s ease-in-out infinite}
.banner::after{content:"";position:absolute;width:200px;height:200px;left:-70px;bottom:-110px;border-radius:50%;background:radial-gradient(circle,rgba(255,157,180,.4),transparent 70%);filter:blur(6px);animation:floatBlob 11s ease-in-out infinite reverse}
.banner>*{position:relative;z-index:1}
.banner h1{margin-bottom:10px}
@keyframes floatBlob{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(-14px,16px,0) scale(1.08)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.badge{display:inline-block;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));color:#fff;border-radius:var(--radius-pill);padding:4px 14px;font-size:12px;margin-bottom:12px;letter-spacing:.4px;box-shadow:0 4px 12px rgba(255,111,145,.35);animation:badgeGlow 2.6s ease-in-out infinite}
@keyframes badgeGlow{0%,100%{box-shadow:0 4px 12px rgba(255,111,145,.35)}50%{box-shadow:0 6px 20px rgba(255,111,145,.55)}}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:16px}
.card{position:relative;background:var(--c-surface);-webkit-backdrop-filter:blur(12px) saturate(160%);backdrop-filter:blur(12px) saturate(160%);border:1px solid var(--c-border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm);transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);overflow:hidden;opacity:0;transform:translateY(22px)}
.card.is-visible,.grid .card{opacity:1;transform:translateY(0)}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:linear-gradient(135deg,rgba(255,111,145,.5),rgba(255,157,180,.15),transparent 60%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity var(--dur) var(--ease);pointer-events:none}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--c-accent);background:var(--c-surface-solid)}
.card:hover::before{opacity:1}
.card h3{margin-top:0}
article.card{margin-bottom:16px}
.meta{font-size:13px;color:var(--c-text-muted);margin-bottom:8px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.meta::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:none}
.faq-item{border:1px solid var(--c-border);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:12px;background:var(--c-surface);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);opacity:0;transform:translateY(18px)}
.faq-item.is-visible{opacity:1;transform:translateY(0)}
.faq-item:hover{box-shadow:var(--shadow-md);border-color:var(--c-accent);transform:translateY(-2px)}
.faq-item summary{font-weight:600;cursor:pointer;color:var(--c-heading);list-style:none;position:relative;padding-right:26px;transition:color var(--dur) var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";position:absolute;right:4px;top:50%;width:9px;height:9px;border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);transform:translateY(-70%) rotate(45deg);transition:transform var(--dur) var(--ease)}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.faq-item summary:hover{color:var(--c-primary)}
.faq-item p{margin-top:10px;animation:fadeUp .45s var(--ease) both}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14px;background:var(--c-surface);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow-sm)}
th,td{border:1px solid var(--c-border-soft);padding:10px;font-size:14px;text-align:left;color:var(--c-text-soft)}
th{background:linear-gradient(135deg,rgba(255,111,145,.16),rgba(255,157,180,.1));color:var(--c-heading);font-weight:700}
tbody tr{transition:background var(--dur) var(--ease)}
tbody tr:hover{background:rgba(255,111,145,.07)}
.toc{background:var(--c-surface);-webkit-backdrop-filter:blur(12px) saturate(160%);backdrop-filter:blur(12px) saturate(160%);border:1px dashed var(--c-accent);border-radius:var(--radius);padding:16px 20px;margin-top:16px;box-shadow:var(--shadow-sm);animation:fadeUp .8s var(--ease) .1s both}
.toc h3{margin-top:0}
.toc ul{columns:2;list-style:disc;margin-left:20px}
.toc li{break-inside:avoid}
.toc a{position:relative;transition:padding-left var(--dur) var(--ease),color var(--dur) var(--ease)}
.toc a:hover{padding-left:5px;text-decoration:none}
footer{background:var(--c-footer-bg);color:var(--c-footer-text);padding:34px 20px;margin-top:20px;position:relative;overflow:hidden}
footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent),var(--c-primary))}
footer a{color:var(--c-footer-link);transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);display:inline-block}
footer a:hover{color:#fff;text-decoration:none;transform:translateX(3px)}
footer h4{color:#fff;margin-bottom:10px}
footer p{color:var(--c-footer-muted);font-size:14px}
footer ul{list-style:none;margin-left:0}
footer li{margin-bottom:6px}
.footer-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.copyright{text-align:center;font-size:13px;color:var(--c-footer-muted);margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12)}
@media(max-width:900px){h1{font-size:25px}h2{font-size:21px}.banner{padding:24px 20px}}
@media(max-width:640px){nav ul{gap:10px}nav a{font-size:14px}.nav-wrap{flex-wrap:wrap;gap:10px;padding:10px 16px}.logo{font-size:20px}.toc ul{columns:1}main{padding:0 16px}section{padding:28px 0}h1{font-size:22px}h2{font-size:19px}.banner{border-radius:var(--radius);padding:22px 16px}.grid{grid-template-columns:1fr;gap:14px}.card{padding:16px}table{font-size:13px}th,td{padding:8px}footer{padding:26px 16px}}
@media(max-width:400px){.logo{font-size:18px}nav ul{gap:8px}nav a{font-size:13px}h1{font-size:20px}}
@media(prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}section,.card,.faq-item{opacity:1!important;transform:none!important}}
@media print{header,footer,.toc{display:none}body{background:#fff;color:#000}section{opacity:1;transform:none;border:none}}