:root{
  --brand:#B9473F;--brand-dark:#8F342F;--amber:#D89A45;--ink:#1E2026;--text:#2B2D31;--muted:#6F706F;
  --paper:#F7F4EF;--paper2:#EEE9E2;--accent:#E06A3B;--line:rgba(30,32,38,.14);--line-strong:rgba(30,32,38,.24);
  --shadow:0 18px 55px rgba(30,32,38,.09);--radius:20px;--radius-sm:12px;--container:1180px
}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--paper)}body{margin:0;color:var(--text);background:var(--paper);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid rgba(224,106,59,.35);outline-offset:3px}.container{width:min(var(--container),calc(100% - 48px));margin-inline:auto}.narrow{max-width:860px}.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}.skip-link{position:fixed;left:16px;top:-80px;z-index:999;background:var(--ink);color:#fff;padding:10px 14px;border-radius:8px}.skip-link:focus{top:16px}.eyebrow{margin:0 0 10px;color:var(--brand);font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}h1,h2,h3{color:var(--ink);line-height:1.2;letter-spacing:-.02em;margin-top:0}h1{font-size:clamp(2.35rem,5vw,5rem)}h2{font-size:clamp(1.65rem,2.8vw,2.8rem)}h3{font-size:1.18rem}p{margin-top:0}code{background:rgba(30,32,38,.07);padding:.12em .36em;border-radius:5px}
.header-strip{background:var(--ink);color:#f8f2e8;font-size:.84rem}.header-strip__inner{min-height:36px;display:flex;justify-content:space-between;align-items:center;gap:20px}.header-strip a{color:#ffd39c;font-weight:700}.site-header{position:sticky;top:0;z-index:50;background:rgba(247,244,239,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav-shell{min-height:78px;display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:22px}.brand{display:inline-flex;align-items:center;gap:12px;min-width:180px}.brand img{width:46px;height:46px;object-fit:contain;border-radius:12px}.brand span{display:grid;line-height:1.2}.brand strong{font-size:1.15rem;color:var(--ink)}.brand small{margin-top:4px;color:var(--muted);font-size:.72rem}.primary-nav{display:flex;justify-content:center;align-items:center;gap:4px}.primary-nav a{padding:9px 10px;color:#43454a;border-radius:10px;font-size:.9rem;white-space:nowrap}.primary-nav a:hover,.primary-nav a.is-current{background:var(--paper2);color:var(--brand)}.search-open,.nav-toggle{border:1px solid var(--line-strong);background:transparent;color:var(--ink);border-radius:999px;padding:9px 14px;font-weight:700}.search-open:hover{border-color:var(--brand);color:var(--brand)}.nav-toggle{display:none}
.hero{padding:76px 0 56px}.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:68px;align-items:center}.hero-copy h1{max-width:760px;margin-bottom:24px}.hero-lead{font-size:1.15rem;color:#55565a;max-width:720px}.hero-actions,.inline-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:11px 18px;border-radius:12px;font-weight:800;border:1px solid transparent;transition:transform .18s ease,border-color .18s ease,background .18s ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-dark)}.btn-secondary{border-color:var(--line-strong);background:rgba(255,255,255,.36);color:var(--ink)}.btn-secondary:hover{border-color:var(--brand)}.btn-light{background:#fff;color:var(--ink)}.btn-outline-light{border-color:rgba(255,255,255,.44);color:#fff}.hero-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:32px 0 0}.hero-facts div{padding:15px 16px;border-left:2px solid var(--amber);background:rgba(255,255,255,.38)}.hero-facts dt{font-size:.76rem;color:var(--muted);font-weight:700}.hero-facts dd{margin:5px 0 0;color:var(--ink);font-weight:700;font-size:.92rem}.hero-visual{margin:0;position:relative}.hero-visual img{width:100%;aspect-ratio:1.17;object-fit:cover;border-radius:34px 8px 34px 8px;box-shadow:var(--shadow)}.hero-visual figcaption{margin-top:12px;color:var(--muted);font-size:.86rem}
.section{padding:82px 0}.section-compact{padding-top:46px}.section-heading{margin-bottom:34px;max-width:760px}.section-heading h2{margin-bottom:14px}.split-heading{max-width:none;display:flex;justify-content:space-between;gap:60px;align-items:end}.split-heading>p{max-width:520px;color:var(--muted)}.soft-band{background:var(--paper2)}.warm-band{background:#f0e4d4}.dark-band{background:var(--ink);color:#e7e1d9}.dark-band h2,.dark-band h3,.dark-band strong{color:#fff}.dark-band .eyebrow{color:#f5b66d}.dark-band .story-card{background:#2a2c32;border-color:rgba(255,255,255,.1)}.dark-band .story-card p{color:#c7c1ba}.dark-band .story-card h3 a{color:#fff}.dark-band .text-link{color:#ffd7a7}
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.topic-card{display:grid;grid-template-columns:180px 1fr;background:rgba(255,255,255,.45);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-height:210px}.topic-card img{width:100%;height:100%;object-fit:cover}.topic-card div{padding:24px}.topic-card h3{margin-bottom:10px;font-size:1.3rem}.topic-card p{color:var(--muted)}.topic-card h3 a:hover{color:var(--brand)}.text-link{color:var(--brand);font-weight:800;display:inline-flex;align-items:center;gap:8px}.text-link:after{content:"→";transition:transform .18s ease}.text-link:hover:after{transform:translateX(3px)}
.intent-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:70px;align-items:start}.intent-copy{position:sticky;top:128px}.intent-list{display:grid;gap:14px}.intent-list article{padding:26px;background:rgba(255,255,255,.54);border-top:3px solid var(--brand)}.intent-list h3{margin-bottom:8px}.intent-list p{margin-bottom:0}.story-grid{display:grid;gap:20px}.story-grid--3{grid-template-columns:repeat(3,1fr)}.story-card{border:1px solid var(--line);background:rgba(255,255,255,.48);border-radius:var(--radius-sm);overflow:hidden}.story-card__media{display:block;overflow:hidden}.story-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}.story-card:hover .story-card__media img{transform:scale(1.025)}.story-card__body{padding:23px}.story-card__body h3{margin-bottom:10px}.story-card__body h3 a:hover{color:var(--brand)}.story-card__body p:not(.eyebrow){color:var(--muted)}.section-action{margin-top:28px;text-align:center}
.check-grid,.check-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px}.numbered-steps{list-style:none;margin:0;padding:0;display:grid;gap:12px}.numbered-steps li{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid rgba(255,255,255,.12)}.numbered-steps li>span{width:48px;height:48px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.28);border-radius:50%;color:#ffd2a4;font-weight:800}.numbered-steps p{margin-bottom:0;color:#c7c1ba}.numbered-steps--light li{border-bottom-color:var(--line)}.numbered-steps--light li>span{border-color:var(--line-strong);color:var(--brand)}.numbered-steps--light p{color:var(--muted)}
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}.feature-split--reverse .feature-media{order:2}.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius)}.feature-media.tall img{aspect-ratio:4/5}.check-list,.plain-list{margin:24px 0;padding:0;list-style:none}.check-list li,.plain-list li{position:relative;padding:9px 0 9px 30px;border-bottom:1px solid var(--line)}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:900}.plain-list li:before{content:"—";position:absolute;left:0;color:var(--muted)}
.editorial-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:start}.editorial-main{padding-right:20px}.editorial-stack{border-top:1px solid var(--line-strong)}.editorial-row{display:grid;grid-template-columns:110px 1fr;gap:18px;padding:18px 4px;border-bottom:1px solid var(--line)}.editorial-row span{color:var(--brand);font-size:.8rem;font-weight:800}.editorial-row strong{color:var(--ink)}.editorial-row:hover strong{color:var(--brand)}
.faq-list{display:grid;gap:10px}.faq-item{border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.46);overflow:clip}.faq-item summary{cursor:pointer;list-style:none;padding:18px 54px 18px 20px;font-weight:800;color:var(--ink);position:relative}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";position:absolute;right:20px;top:13px;font-size:1.55rem;color:var(--brand)}.faq-item[open] summary:after{content:"–"}.faq-item div{padding:0 20px 18px;color:var(--muted)}.faq-item div p{margin-bottom:0}.about-strip{padding-top:38px}.about-strip__grid{display:grid;grid-template-columns:.68fr 1.32fr;gap:50px;align-items:center;padding:28px;background:#ead8ca;border-radius:var(--radius)}.about-strip__grid img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px}
.page-hero{padding:62px 0 46px;border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(2.2rem,4vw,4.2rem);max-width:980px;margin-bottom:20px}.page-hero p:not(.eyebrow){max-width:820px;font-size:1.08rem;color:#58595d}.page-hero__grid{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:center}.page-hero__grid>img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--radius)}.breadcrumbs{margin-bottom:28px}.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0;list-style:none;font-size:.82rem;color:var(--muted)}.breadcrumbs li:not(:last-child):after{content:"/";margin-left:8px;color:#a09b94}.breadcrumbs a:hover{color:var(--brand)}
.table-wrap{overflow-x:auto;margin-top:26px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.5)}table{width:100%;border-collapse:collapse;min-width:700px}th,td{text-align:left;padding:15px 16px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--paper2);color:var(--ink);font-size:.86rem}tbody tr:last-child td{border-bottom:0}.three-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.three-columns article{padding:28px;border-top:3px solid var(--brand);background:rgba(255,255,255,.48)}.step-no{color:var(--brand);font-weight:900;font-size:.82rem;letter-spacing:.1em}.note-card{border:1px solid var(--line);background:rgba(255,255,255,.5);padding:26px;border-radius:14px}.note-card ul{padding-left:20px;margin-bottom:0}.note-card--dark{background:#2b2d33;border-color:rgba(255,255,255,.12)}.note-card--dark li{color:#c9c3bc}.quote-note{margin:0;padding:34px;border-left:4px solid var(--brand);background:rgba(255,255,255,.45);font-size:1.25rem;font-weight:700}.two-column-content,.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}.lined-list{list-style:none;padding:0;margin:22px 0 0}.lined-list li{padding:14px 0;border-bottom:1px solid var(--line)}.lined-list li:first-child{border-top:1px solid var(--line)}.compare-grid article{padding:34px;border:1px solid var(--line);background:rgba(255,255,255,.42);border-radius:var(--radius)}
.category-panels{display:grid;grid-template-columns:1fr 1fr;gap:20px}.category-panels article{display:grid;grid-template-columns:.78fr 1.22fr;border:1px solid var(--line);background:rgba(255,255,255,.44);min-height:280px;overflow:hidden;border-radius:var(--radius)}.category-panels img{width:100%;height:100%;object-fit:cover}.category-panels article div{padding:26px}.category-panels span{color:var(--brand);font-size:.8rem;font-weight:800}.category-panels h3{margin:7px 0 12px;font-size:1.35rem}.category-panels p{color:var(--muted)}.category-panels a{color:var(--brand);font-weight:800}.guide-stack{display:grid;gap:22px}.guide-block{display:grid;grid-template-columns:120px 1fr;gap:30px;padding:34px 0;border-bottom:1px solid var(--line)}.guide-block__index{font-size:3.2rem;line-height:1;color:#cbbbac;font-weight:300}.guide-block ol{margin:20px 0 0;padding-left:22px}.guide-block li{margin:8px 0;padding-left:8px}.faq-layout{display:grid;grid-template-columns:280px 1fr;gap:46px;align-items:start}.faq-aside{position:sticky;top:128px;display:grid;border-top:2px solid var(--brand)}.faq-aside h2{font-size:1.25rem;padding:18px 0 10px}.faq-aside a{padding:11px 0;border-bottom:1px solid var(--line);color:var(--muted)}.faq-aside a:hover{color:var(--brand)}.principles-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.principles-grid article{background:rgba(255,255,255,.5);padding:26px;border-radius:14px;border:1px solid var(--line)}.principles-grid span{color:var(--brand);font-weight:900}.principles-grid h2{font-size:1.35rem;margin:14px 0 10px}.policy-stack{display:grid;gap:18px}.policy-stack article{padding:26px 0;border-bottom:1px solid var(--line)}.policy-stack h2{font-size:1.45rem}
.article-header{padding:50px 0 38px;border-bottom:1px solid var(--line)}.article-header__grid{display:grid;grid-template-columns:1.18fr .82fr;gap:60px;align-items:end}.article-header h1{font-size:clamp(2.2rem,4.2vw,4.4rem);margin-bottom:20px}.article-deck{max-width:830px;font-size:1.15rem;color:#55565a}.article-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:24px;color:var(--muted);font-size:.86rem}.article-meta a{color:var(--brand);font-weight:700}.article-header figure{margin:0}.article-header figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius)}.article-layout{display:grid;grid-template-columns:250px minmax(0,760px);gap:70px;justify-content:center;padding-top:58px;padding-bottom:70px}.article-toc{position:sticky;top:125px;align-self:start;border-top:2px solid var(--brand);padding-top:18px}.article-toc ol{padding-left:18px;color:var(--muted);font-size:.9rem}.article-toc li{margin:9px 0}.article-toc a:hover{color:var(--brand)}.article-content{font-size:1.05rem}.article-content section{margin-bottom:46px;scroll-margin-top:120px}.article-content h2{font-size:1.85rem;margin-bottom:18px}.article-content p{margin-bottom:18px;color:#414348}.article-summary{padding:28px;background:#eee2d6;border-left:4px solid var(--brand)}.related-section{border-top:1px solid var(--line)}
.search-form{display:flex;gap:10px;margin-top:24px}.search-form input{flex:1;min-width:0;border:1px solid var(--line-strong);background:#fff;color:var(--ink);min-height:48px;padding:10px 14px;border-radius:11px}.search-form button{border:0;background:var(--brand);color:#fff;border-radius:11px;padding:10px 18px;font-weight:800}.search-form--large input{min-height:56px;font-size:1.04rem}.search-results-heading{padding-bottom:20px;border-bottom:1px solid var(--line)}.search-results{display:grid}.search-results article{padding:25px 0;border-bottom:1px solid var(--line)}.search-results article>span{color:var(--brand);font-size:.78rem;font-weight:800}.search-results h3{margin:5px 0 9px;font-size:1.35rem}.search-results p{color:var(--muted)}.empty-state{padding:38px;border:1px solid var(--line);background:rgba(255,255,255,.45);border-radius:var(--radius)}.tag-links{display:flex;flex-wrap:wrap;gap:9px;margin:22px 0}.tag-links a{padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:#fff}.tag-links a:hover{border-color:var(--brand);color:var(--brand)}
.search-modal[hidden]{display:none!important}.search-modal{position:fixed;inset:0;z-index:200;display:grid;place-items:start center;padding-top:min(14vh,120px)}.search-modal__backdrop{position:absolute;inset:0;background:rgba(30,32,38,.62)}.search-modal__panel{position:relative;width:min(680px,calc(100% - 32px));background:var(--paper);padding:34px;border-radius:var(--radius);box-shadow:0 25px 80px rgba(0,0,0,.28)}.search-modal__panel>p:not(.eyebrow){color:var(--muted)}.search-modal__close{position:absolute;right:14px;top:12px;border:0;background:transparent;font-size:2rem;line-height:1;color:var(--muted)}body.modal-open{overflow:hidden}.not-found{padding:90px 0}.not-found__grid{display:grid;grid-template-columns:1fr .7fr;gap:60px;align-items:center}.not-found h1{font-size:clamp(2.4rem,5vw,5rem)}.not-found__grid>img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius)}.not-found-links{display:flex;flex-wrap:wrap;gap:18px;margin-top:24px}.not-found-links a{color:var(--brand);font-weight:800}
.site-footer{background:#17191e;color:#bdb9b3;padding:62px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:44px}.footer-grid h2{color:#fff;font-size:1rem;margin-bottom:16px}.footer-grid>div:not(.footer-intro){display:flex;flex-direction:column;gap:9px}.footer-grid a:hover{color:#fff}.footer-brand{color:#fff;font-weight:900;font-size:1.3rem}.footer-intro p{margin:14px 0 0;max-width:460px}.footer-bottom{margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.11);display:flex;justify-content:space-between;gap:20px;font-size:.84rem}.footer-bottom p{margin:0}.footer-bottom a{color:#ffd1a0}
@media(max-width:1080px){.container{width:min(var(--container),calc(100% - 36px))}.primary-nav a{padding-inline:8px;font-size:.86rem}.nav-shell{gap:14px}.brand{min-width:150px}.brand small{display:none}.story-grid--3{grid-template-columns:repeat(2,1fr)}.principles-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.header-strip{display:none}.nav-shell{grid-template-columns:auto 1fr auto;min-height:70px}.nav-toggle{display:inline-flex;justify-self:end}.search-open{justify-self:end}.primary-nav{display:none;position:absolute;left:18px;right:18px;top:70px;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:14px;padding:10px;flex-direction:column;align-items:stretch}.primary-nav.is-open{display:flex}.hero-grid,.feature-split,.feature-split--reverse,.intent-layout,.check-grid,.editorial-layout,.page-hero__grid,.check-layout,.two-column-content,.compare-grid,.article-header__grid,.not-found__grid{grid-template-columns:1fr}.feature-split--reverse .feature-media{order:0}.intent-copy,.faq-aside{position:static}.topic-grid,.category-panels{grid-template-columns:1fr}.article-layout{grid-template-columns:1fr;gap:24px;padding-top:36px}.article-toc{position:static;padding:18px;border:1px solid var(--line);border-top:2px solid var(--brand);border-radius:12px}.faq-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.container{width:calc(100% - 28px)}.nav-shell{grid-template-columns:1fr auto auto}.brand img{width:40px;height:40px}.brand strong{font-size:1rem}.search-open{width:44px;height:44px;overflow:hidden;padding:0;color:transparent;position:relative}.search-open:after{content:"⌕";color:var(--ink);font-size:1.5rem;position:absolute;inset:0;display:grid;place-items:center}.section{padding:62px 0}.hero-facts{grid-template-columns:1fr}.hero-actions .btn,.inline-actions .btn{width:100%}.split-heading{display:block}.topic-card{grid-template-columns:1fr}.topic-card img{aspect-ratio:16/8}.story-grid--3,.three-columns,.principles-grid{grid-template-columns:1fr}.category-panels article{grid-template-columns:1fr}.category-panels img{aspect-ratio:16/8}.guide-block{grid-template-columns:1fr;gap:12px}.guide-block__index{font-size:2.2rem}.article-meta{display:grid;gap:4px}.search-form{flex-direction:column}.search-modal__panel{padding:28px 22px 24px}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.about-strip__grid{grid-template-columns:1fr;padding:20px}}
@media(max-width:420px){.container{width:calc(100% - 24px)}h1{font-size:2.25rem}h2{font-size:1.65rem}.brand span{display:none}.page-hero{padding-top:42px}.hero{padding-top:42px}.story-card__body,.topic-card div,.three-columns article,.compare-grid article{padding:20px}.empty-state{padding:24px 18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}