/* roulang page: index */
:root{--ice:#f5f8fc;--paper:#fff;--blue:#2457c5;--blue-dark:#1c469f;--cyan:#31a7c8;--coral:#f07a62;--ink:#17243a;--text:#526176;--muted:#778499;--line:#dce5f0;--radius:20px;--shadow:0 16px 40px rgba(31,66,122,.09);--shadow-hover:0 22px 48px rgba(31,66,122,.15)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ice);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}.container{width:min(1200px,calc(100% - 40px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(31,66,122,.05);backdrop-filter:blur(12px)}.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{color:var(--ink);font-weight:800;letter-spacing:0;font-size:18px;white-space:nowrap}.brand-mark{display:inline-flex;width:12px;height:12px;background:var(--coral);margin-right:9px;transform:rotate(45deg);border-radius:3px}.nav-links{display:flex;align-items:center;gap:8px}.nav-link{position:relative;padding:10px 14px;color:var(--text);font-size:14px;border-radius:10px;transition:.2s}.nav-link:hover,.nav-link.active{color:var(--blue);background:#edf4ff}.nav-link.active:after{content:"";position:absolute;bottom:3px;left:14px;right:14px;height:2px;background:var(--blue);border-radius:2px}.nav-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 19px;border:1px solid var(--blue);border-radius:13px;background:var(--blue);color:#fff;font-weight:700;transition:.22s}.nav-cta{min-height:40px;padding:0 15px;font-size:14px}.nav-cta:hover,.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(36,87,197,.2)}.btn-primary:active,.nav-cta:active{transform:translateY(0)}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 19px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--blue);font-weight:700;transition:.22s}.btn-secondary:hover{border-color:var(--blue);background:#f6f9ff;transform:translateY(-2px)}.focusable:focus-visible,.nav-link:focus-visible,.btn-primary:focus-visible,.btn-secondary:focus-visible,.menu-toggle:focus-visible,.faq-button:focus-visible{outline:3px solid rgba(49,167,200,.45);outline-offset:3px}.menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--blue);border-radius:10px;width:42px;height:42px}.hero{padding:92px 0 104px;background:linear-gradient(135deg,#f5f8fc 0%,#fff 72%);overflow:hidden}.hero-grid{display:grid;grid-template-columns:7fr 5fr;align-items:center;gap:70px}.eyebrow,.tag{display:inline-flex;align-items:center;gap:8px;color:var(--blue);background:#edf4ff;border:1px solid #cbdcf8;border-radius:11px;padding:5px 10px;font-size:13px;font-weight:700}.eyebrow:before{content:"";width:7px;height:7px;background:var(--cyan);border-radius:50%}.hero h1{margin:20px 0 22px;color:var(--ink);font-size:clamp(38px,5vw,62px);line-height:1.16;letter-spacing:0;font-weight:800}.hero-copy{max-width:690px;font-size:18px;line-height:1.85;color:var(--text)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.meta-row{display:flex;gap:24px;flex-wrap:wrap;margin-top:28px;color:var(--muted);font-size:13px}.meta-row strong{display:block;color:var(--ink);font-size:20px;line-height:1.3}.poster-stage{position:relative;min-height:500px}.poster-main{position:absolute;right:8%;top:8px;width:63%;aspect-ratio:2/3;border:9px solid #fff;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-hover);background:linear-gradient(155deg,#d9eff6,#89b3e4 48%,#2457c5)}.poster-main:before{content:"";position:absolute;inset:0;background:linear-gradient(155deg,rgba(255,255,255,.62),transparent 35%,rgba(16,43,92,.24))}.poster-main:after{content:"";position:absolute;width:150px;height:150px;right:-35px;top:80px;border:1px solid rgba(255,255,255,.7);border-radius:50%}.poster-info{position:absolute;left:20px;right:16px;bottom:20px;color:#fff;z-index:1}.poster-info small{display:block;letter-spacing:2px;font-size:11px;opacity:.84}.poster-info b{display:block;font-size:25px;line-height:1.25;margin-top:7px}.poster-card{position:absolute;width:40%;aspect-ratio:2/3;border:7px solid #fff;border-radius:15px;overflow:hidden;box-shadow:var(--shadow);background:linear-gradient(145deg,#bfe6ef,#4a8cce 58%,#1d468f)}.poster-card:before{content:"";position:absolute;inset:0;background:linear-gradient(170deg,rgba(255,255,255,.4),transparent 40%,rgba(15,45,95,.36))}.poster-card.one{left:0;bottom:44px;transform:rotate(-7deg)}.poster-card.two{right:0;bottom:0;transform:rotate(7deg);background:linear-gradient(145deg,#e9edf8,#8ba5da 54%,#355aa5)}.poster-label{position:absolute;left:14px;bottom:13px;color:#fff;font-weight:700;font-size:14px;line-height:1.3}.section{padding:100px 0}.section-head{max-width:700px;margin-bottom:38px}.section-kicker{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:1px}.section h2{margin:8px 0 13px;color:var(--ink);font-size:clamp(29px,4vw,42px);line-height:1.25;font-weight:800}.section-head p{margin:0;color:var(--text);font-size:17px}.problem{background:#f0f6fc}.problem-panel{display:grid;grid-template-columns:5fr 7fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.problem-intro{padding:45px;border-left:5px solid var(--coral)}.problem-list{padding:25px 38px}.problem-item{display:grid;grid-template-columns:46px 1fr 20px;gap:16px;align-items:start;padding:19px 0;border-bottom:1px solid var(--line)}.problem-item:last-child{border-bottom:0}.number{color:var(--blue);font-weight:800;font-size:20px}.problem-item h3{margin:0;color:var(--ink);font-size:18px}.problem-item p{margin:5px 0 0;color:var(--muted);font-size:14px;line-height:1.65}.status-dot{width:9px;height:9px;margin-top:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 5px #e7f7fb}.solution{background:#fff}.solution-row{display:grid;grid-template-columns:8fr 4fr;gap:28px;align-items:stretch;margin-top:27px}.solution-row.reverse{grid-template-columns:4fr 8fr}.visual-band{min-height:240px;border-radius:18px;position:relative;overflow:hidden;background:linear-gradient(120deg,#dff4f7,#a9c9ec 54%,#557cc6)}.visual-band.alt{background:linear-gradient(120deg,#d9e5f8,#fff 42%,#a5d6df)}.visual-band:after{content:"";position:absolute;inset:18px;border:1px solid rgba(255,255,255,.75);border-radius:12px}.visual-mark{position:absolute;right:30px;top:25px;font-size:72px;color:rgba(255,255,255,.55);font-weight:800;line-height:1}.solution-copy{border:1px solid var(--line);border-radius:18px;padding:30px;background:#fff;box-shadow:var(--shadow)}.solution-copy h3{color:var(--ink);font-size:23px;margin:12px 0 8px}.solution-copy p{margin:0;color:var(--text)}.text-link{display:inline-flex;align-items:center;gap:8px;margin-top:18px;color:var(--blue);font-weight:700}.text-link span{transition:.2s}.text-link:hover span{transform:translateX(5px)}.results{background:#f0f6fc}.result-panel{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);overflow:hidden}.result-lead,.result-cell{padding:34px 28px}.result-lead{background:#edf4ff}.result-lead strong{display:block;color:var(--blue);font-size:54px;line-height:1.1}.result-lead b{display:block;color:var(--ink);margin-top:7px}.result-cell{border-left:1px solid var(--line)}.result-cell strong{display:block;color:var(--ink);font-size:25px;line-height:1.2}.result-cell p{margin:9px 0 0;color:var(--muted);font-size:14px}.testimonials{background:#fff}.quote-layout{display:grid;grid-template-columns:7fr 5fr;gap:22px}.quote-main,.quote-side{border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow);padding:34px}.quote-main{background:#f4f8ff}.quote-mark{font-size:70px;line-height:.7;color:#b8d5fc}.quote-main blockquote{margin:18px 0;color:var(--ink);font-size:22px;line-height:1.65;font-weight:700}.quote-note{font-size:13px;color:var(--muted)}.quote-side{display:flex;flex-direction:column;justify-content:center;gap:22px}.mini-quote{padding-bottom:20px;border-bottom:1px solid var(--line);color:var(--text);font-size:15px}.mini-quote:last-child{padding-bottom:0;border:0}.mini-quote b{display:block;color:var(--ink);margin-bottom:5px}.cta-section{padding:100px 0 110px}.cta-panel{position:relative;display:grid;grid-template-columns:1fr 250px;gap:45px;align-items:center;padding:53px 58px;border:1px solid #cbdcf8;border-radius:var(--radius);background:linear-gradient(110deg,#eaf4ff,#fff);overflow:hidden}.cta-panel:after{content:"";position:absolute;right:210px;top:-100px;width:280px;height:280px;border:1px solid rgba(49,167,200,.22);border-radius:50%}.cta-panel h2{margin:0 0 12px;color:var(--ink);font-size:34px;line-height:1.3}.cta-panel p{max-width:650px;margin:0}.cta-poster{aspect-ratio:2/3;border:7px solid #fff;border-radius:14px;background:linear-gradient(145deg,#d9eff6,#5c91d2 58%,#2457c5);box-shadow:var(--shadow);position:relative}.cta-poster span{position:absolute;left:15px;right:15px;bottom:15px;color:#fff;font-size:18px;font-weight:800;line-height:1.35}.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:55px;margin-top:86px}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-button{width:100%;display:flex;justify-content:space-between;gap:18px;align-items:center;border:0;background:transparent;text-align:left;padding:20px 0;color:var(--ink);font-weight:700}.faq-button i{font-style:normal;color:var(--blue);font-size:24px;transition:.2s}.faq-answer{max-height:0;overflow:hidden;color:var(--text);font-size:14px;transition:max-height .25s ease}.faq-answer p{margin:0 40px 20px 0}.faq-item.open .faq-answer{max-height:160px}.faq-item.open .faq-button i{transform:rotate(45deg)}.site-footer{border-top:1px solid var(--line);background:#fff;padding:38px 0 25px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:35px}.footer-title{color:var(--ink);font-weight:800}.footer-copy{max-width:370px;margin:12px 0;color:var(--muted);font-size:14px}.footer-links{display:flex;flex-direction:column;gap:7px;color:var(--text);font-size:14px}.footer-links a:hover{color:var(--blue)}.copyright{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:32px;padding-top:18px;color:var(--muted);font-size:13px}.mobile-menu{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:900px){.hero-grid,.quote-layout,.faq-wrap{grid-template-columns:1fr;gap:38px}.hero{padding:70px 0 78px}.poster-stage{min-height:440px;max-width:520px;margin:auto}.result-panel{grid-template-columns:1fr 1fr}.result-lead{grid-column:span 2}.solution-row,.solution-row.reverse{grid-template-columns:1fr 1fr}.cta-panel{grid-template-columns:1fr 180px;padding:42px}.nav-links{gap:0}.nav-link{padding-inline:9px}}
@media(max-width:639px){.container{width:min(100% - 28px,1200px)}.nav-wrap{min-height:66px}.brand{font-size:15px}.nav-links,.nav-cta{display:none}.menu-toggle{display:block}.mobile-menu{position:absolute;top:67px;left:14px;right:14px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);display:none}.mobile-menu.open{display:block}.mobile-menu a{display:block;padding:12px;color:var(--ink);border-bottom:1px solid var(--line)}.mobile-menu a:last-child{border:0}.hero h1{font-size:40px}.hero-copy{font-size:16px}.actions>*{width:100%}.poster-stage{min-height:370px;transform:scale(.9);transform-origin:top center;margin-bottom:-35px}.section{padding:62px 0}.problem-panel{grid-template-columns:1fr}.problem-intro{padding:29px 25px}.problem-list{padding:15px 25px}.problem-item{grid-template-columns:34px 1fr 14px;gap:10px}.solution-row,.solution-row.reverse{grid-template-columns:1fr}.visual-band{min-height:180px}.result-panel{grid-template-columns:1fr}.result-lead{grid-column:auto}.result-cell{border-left:0;border-top:1px solid var(--line)}.result-lead,.result-cell{padding:25px}.quote-main,.quote-side{padding:26px}.quote-main blockquote{font-size:19px}.cta-panel{grid-template-columns:1fr;padding:32px 25px}.cta-poster{width:115px}.cta-panel h2{font-size:28px}.faq-wrap{margin-top:60px;gap:25px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:span 2}.copyright{display:block}.copyright span{display:block;margin-top:7px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category2 */
:root{--ice:#f5f8fc;--paper:#fff;--blue:#2457c5;--blue-dark:#1c469f;--cyan:#31a7c8;--coral:#f07a62;--ink:#17243a;--text:#526176;--muted:#778499;--line:#dce5f0;--radius:20px;--shadow:0 16px 40px rgba(31,66,122,.09);--shadow-hover:0 22px 48px rgba(31,66,122,.15)}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;background:var(--ice);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75} a{color:inherit;text-decoration:none} img{display:block;max-width:100%} button,input{font:inherit} button{cursor:pointer} button:disabled{cursor:not-allowed;opacity:.55}
.container{width:min(1200px,calc(100% - 40px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(31,66,122,.05);backdrop-filter:blur(12px)}.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{color:var(--ink);font-weight:800;letter-spacing:0;font-size:18px;white-space:nowrap}.brand-mark{display:inline-flex;width:12px;height:12px;background:var(--coral);margin-right:9px;transform:rotate(45deg);border-radius:3px}.nav-links{display:flex;align-items:center;gap:8px}.nav-link{position:relative;padding:10px 14px;color:var(--text);font-size:14px;border-radius:10px;transition:.2s}.nav-link:hover,.nav-link.active{color:var(--blue);background:#edf4ff}.nav-link.active:after{content:"";position:absolute;bottom:3px;left:14px;right:14px;height:2px;background:var(--blue);border-radius:2px}.nav-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 19px;border:1px solid var(--blue);border-radius:13px;background:var(--blue);color:#fff;font-weight:700;transition:.22s}.nav-cta{min-height:40px;padding:0 15px;font-size:14px}.nav-cta:hover,.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(36,87,197,.2)}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 19px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--blue);font-weight:700;transition:.22s}.btn-secondary:hover{border-color:var(--blue);background:#f6f9ff;transform:translateY(-2px)}.menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--blue);border-radius:10px;width:42px;height:42px}.nav-link:focus-visible,.nav-cta:focus-visible,.btn-primary:focus-visible,.btn-secondary:focus-visible,.menu-toggle:focus-visible,.faq-button:focus-visible{outline:3px solid rgba(49,167,200,.45);outline-offset:3px}
.breadcrumb{border-bottom:1px solid var(--line);background:#f0f6ff}.breadcrumb-inner{min-height:50px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px}.breadcrumb a{color:var(--blue);font-weight:700}.crumb-sep{color:#a7b4c5}.back-link{margin-left:auto;display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-weight:700}
.hero-guide{padding:74px 0 84px;background:radial-gradient(circle at 86% 18%,rgba(49,167,200,.14),transparent 25%),linear-gradient(135deg,#f4f8ff 0%,#fff 75%)}.guide-grid{display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:end}.eyebrow,.tag{display:inline-flex;align-items:center;gap:8px;color:var(--blue);background:#edf4ff;border:1px solid #cbdcf8;border-radius:11px;padding:5px 10px;font-size:13px;font-weight:700}.eyebrow:before{content:"";width:7px;height:7px;background:var(--cyan);border-radius:50%}.hero-guide h1{margin:18px 0;color:var(--ink);font-size:clamp(38px,5vw,59px);line-height:1.16;font-weight:800;letter-spacing:-1px}.hero-guide p{max-width:760px;margin:0;color:var(--text);font-size:18px;line-height:1.85}.tag-row{display:flex;gap:9px;flex-wrap:wrap;margin-top:27px}.guide-index{padding:25px;border:1px solid #cbdcf8;border-radius:20px;background:#fff;box-shadow:var(--shadow)}.guide-index h2{margin:0 0 12px;color:var(--ink);font-size:17px;font-weight:800}.guide-index a{display:flex;gap:12px;align-items:center;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--text);transition:.2s}.guide-index a:last-child{border:0}.guide-index a:hover{color:var(--blue);padding-left:5px}.index-no{color:var(--coral);font-weight:800;font-size:13px}
.section{padding:94px 0}.section-kicker{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:1px}.section h2{margin:8px 0 14px;color:var(--ink);font-size:clamp(29px,4vw,41px);line-height:1.25;font-weight:800}.section-intro{max-width:740px;margin:0;color:var(--text);font-size:17px}.reading-layout{display:grid;grid-template-columns:260px 1fr;gap:54px;align-items:start}.chapter-nav{position:sticky;top:105px;padding:20px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow)}.chapter-nav b{display:block;color:var(--ink);margin-bottom:8px}.chapter-nav a{display:flex;align-items:center;gap:10px;padding:10px 4px;border-bottom:1px solid var(--line);font-size:14px;color:var(--text);transition:.2s}.chapter-nav a:last-child{border-bottom:0}.chapter-nav a:hover{color:var(--blue)}.chapter{position:relative;display:grid;grid-template-columns:155px 1fr;gap:28px;padding:0 0 48px;margin-bottom:47px;border-bottom:1px solid var(--line)}.chapter:last-child{margin-bottom:0}.chapter-num{font-size:76px;line-height:1;color:#dceafb;font-weight:800;letter-spacing:-5px}.chapter-body h3{margin:4px 0 11px;color:var(--ink);font-size:24px;line-height:1.35}.chapter-body p{margin:0 0 16px}.chapter-media{aspect-ratio:16/8;border:1px solid #cbdcf8;border-radius:17px;overflow:hidden;background:linear-gradient(120deg,#dff1f6,#8bb6e6 56%,#386ac5);position:relative;margin:20px 0}.chapter-media:before{content:"";position:absolute;inset:0;background:linear-gradient(145deg,rgba(255,255,255,.72),transparent 43%,rgba(23,63,133,.18))}.chapter-media:after{content:"";position:absolute;width:190px;height:190px;right:12%;top:-40px;border:1px solid rgba(255,255,255,.65);border-radius:50%}.chapter-media.alt{background:linear-gradient(120deg,#f2e9ea,#a6c9e7 52%,#4576bd)}.chapter-media.third{background:linear-gradient(120deg,#d8eef3,#a2d3ca 48%,#3978bc)}
.point-list{margin:0;padding:0;list-style:none}.point-list li{position:relative;padding:8px 0 8px 25px}.point-list li:before{content:"";position:absolute;left:0;top:17px;width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px #e3f5f8}
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:34px}.compare-card{padding:32px;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow);transition:.22s}.compare-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#bfd2f0}.compare-card.highlight{background:#edf4ff;border-color:#cbdcf8}.compare-card h3{margin:10px 0;color:var(--ink);font-size:22px}.compare-card dl{margin:19px 0 0}.compare-card dt{color:var(--blue);font-size:14px;font-weight:800;margin-top:14px}.compare-card dd{margin:3px 0 0;color:var(--text);font-size:15px}
.check-panel{display:grid;grid-template-columns:5fr 7fr;gap:45px;padding:48px;border:1px solid #cbdcf8;border-radius:24px;background:linear-gradient(110deg,#eaf4ff,#fff);box-shadow:var(--shadow)}.check-panel h2{margin-top:8px}.checks{display:grid;gap:12px}.check{display:grid;grid-template-columns:38px 1fr;gap:14px;padding:17px;border:1px solid var(--line);border-radius:14px;background:#fff}.check-icon{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;background:#e6f6fa;color:var(--blue);font-weight:800}.check h3{margin:0;color:var(--ink);font-size:16px}.check p{margin:3px 0 0;font-size:14px;line-height:1.65;color:var(--muted)}
.select-list{display:grid;grid-template-columns:7fr 5fr;gap:28px;align-items:start}.select-main{padding:36px;border:1px solid var(--line);background:#fff;border-radius:20px;box-shadow:var(--shadow)}.select-main h3{margin:0 0 15px;color:var(--ink);font-size:25px}.select-main p{margin:0 0 18px}.quick-card{padding:30px;border-radius:20px;background:var(--ink);color:#e8f2ff;position:relative;overflow:hidden}.quick-card:before{content:"";position:absolute;width:180px;height:180px;right:-55px;top:-60px;border:1px solid rgba(255,255,255,.22);border-radius:50%}.quick-card h3{position:relative;margin:0 0 10px;color:#fff;font-size:21px}.quick-card p{position:relative;margin:0 0 20px;color:#c6d7ee;font-size:15px}.quick-card .btn-secondary{position:relative}
.faq-area{padding:80px 0 102px}.faq-grid{display:grid;grid-template-columns:5fr 7fr;gap:58px}.faq-shell{border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow);overflow:hidden}.faq-item{border-bottom:1px solid var(--line)}.faq-item:last-child{border-bottom:0}.faq-button{width:100%;border:0;background:#fff;color:var(--ink);text-align:left;padding:20px 22px;display:flex;align-items:center;justify-content:space-between;gap:15px;font-weight:800;font-size:16px}.faq-button:hover{background:#f7faff;color:var(--blue)}.faq-icon{font-size:24px;color:var(--blue);line-height:1;transition:.22s}.faq-answer{display:none;padding:0 22px 20px;color:var(--text);font-size:15px}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-icon{transform:rotate(45deg)}
.cta-band{padding:42px 0 100px}.cta-panel{display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;padding:47px 54px;border:1px solid #cbdcf8;border-radius:24px;background:linear-gradient(110deg,#eaf4ff,#fff);box-shadow:var(--shadow);position:relative;overflow:hidden}.cta-panel:after{content:"";position:absolute;right:18%;bottom:-120px;width:260px;height:260px;border:1px solid rgba(49,167,200,.25);border-radius:50%}.cta-panel h2{position:relative;margin:0 0 10px;color:var(--ink);font-size:32px;line-height:1.25}.cta-panel p{position:relative;max-width:650px;margin:0}.cta-actions{position:relative;display:flex;gap:12px;flex-wrap:wrap}
.site-footer{border-top:1px solid var(--line);background:#fff;padding:55px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px}.footer-title{color:var(--ink);font-weight:800;margin-bottom:12px}.footer-copy{max-width:390px;margin:0;color:var(--muted);font-size:14px;line-height:1.75}.footer-links{display:grid;gap:8px}.footer-links a{font-size:14px;color:var(--text);transition:.2s}.footer-links a:hover{color:var(--blue);padding-left:4px}.copyright{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:42px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
@media(max-width:1023px){.guide-grid,.faq-grid,.check-panel,.select-list{grid-template-columns:1fr}.reading-layout{grid-template-columns:1fr}.chapter-nav{position:static;display:grid;grid-template-columns:repeat(2,1fr);gap:0}.chapter-nav b{grid-column:1/-1}.hero-guide{padding:62px 0}.section{padding:72px 0}.faq-area{padding:65px 0}.chapter{grid-template-columns:105px 1fr;gap:20px}.chapter-num{font-size:58px}.nav-links{gap:3px}.nav-link{padding:9px 10px}.cta-panel{padding:42px}.footer-grid{grid-template-columns:1.5fr 1fr}}
@media(max-width:720px){.container{width:min(100% - 28px,1200px)}.nav-wrap{min-height:68px}.brand{font-size:15px;overflow:hidden;text-overflow:ellipsis}.menu-toggle{display:grid;place-items:center}.nav-links{display:none;position:absolute;top:68px;left:14px;right:14px;padding:12px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow);align-items:stretch}.nav-links.open{display:flex;flex-direction:column}.nav-link,.nav-cta{width:100%;justify-content:center}.breadcrumb-inner{padding:8px 0}.back-link{margin-left:0;width:100%}.hero-guide{padding:49px 0 55px}.hero-guide h1{font-size:39px}.hero-guide p{font-size:16px}.guide-index{padding:20px}.section{padding:58px 0}.section-intro{font-size:16px}.chapter-nav{grid-template-columns:1fr}.chapter{grid-template-columns:1fr;gap:8px;padding-bottom:36px;margin-bottom:35px}.chapter-num{font-size:48px}.chapter-body h3{font-size:22px}.compare-wrap{grid-template-columns:1fr}.check-panel{padding:28px 22px;gap:25px}.select-main{padding:27px}.faq-grid{gap:28px}.cta-panel{grid-template-columns:1fr;padding:33px 25px}.cta-panel h2{font-size:28px}.cta-actions .btn-primary,.cta-actions .btn-secondary{width:100%}.footer-grid{grid-template-columns:1fr;gap:28px}.copyright{margin-top:30px}.tag-row{gap:7px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}.compare-card:hover,.btn-primary:hover,.btn-secondary:hover,.nav-cta:hover{transform:none}}

/* roulang page: category1 */
:root{
  --ice:#f5f8fc;
  --paper:#fff;
  --blue:#2457c5;
  --blue-dark:#1c469f;
  --cyan:#31a7c8;
  --coral:#f07a62;
  --ink:#17243a;
  --text:#526176;
  --muted:#778499;
  --line:#dce5f0;
  --radius:20px;
  --radius-small:13px;
  --shadow:0 16px 40px rgba(31,66,122,.09);
  --shadow-hover:0 22px 48px rgba(31,66,122,.15);
}
*,
*::before,
*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ice);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.55}
h1,h2,h3,p{overflow-wrap:anywhere}
.container{width:min(1200px,calc(100% - 40px));margin-inline:auto}
.skip-link{
  position:fixed;
  left:18px;
  top:-90px;
  z-index:100;
  padding:10px 16px;
  border-radius:10px;
  background:var(--ink);
  color:#fff;
  font-weight:700;
  transition:top .2s;
}
.skip-link:focus{top:16px}

/* 全站导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.95);
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 18px rgba(31,66,122,.05);
  backdrop-filter:blur(12px);
}
.nav-wrap{
  min-height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  color:var(--ink);
  font-weight:800;
  letter-spacing:0;
  font-size:18px;
  white-space:nowrap;
}
.brand-mark{
  display:inline-flex;
  flex:0 0 auto;
  width:12px;
  height:12px;
  background:var(--coral);
  margin-right:9px;
  transform:rotate(45deg);
  border-radius:3px;
}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-link{
  position:relative;
  padding:10px 14px;
  color:var(--text);
  font-size:14px;
  border-radius:10px;
  transition:color .2s,background .2s,transform .2s;
}
.nav-link:hover,.nav-link.active{color:var(--blue);background:#edf4ff}
.nav-link.active::after{
  content:"";
  position:absolute;
  bottom:3px;
  left:14px;
  right:14px;
  height:2px;
  background:var(--blue);
  border-radius:2px;
}
.nav-cta,.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 19px;
  border:1px solid var(--blue);
  border-radius:13px;
  background:var(--blue);
  color:#fff;
  font-weight:700;
  transition:background .22s,transform .22s,box-shadow .22s;
}
.nav-cta{min-height:40px;padding:0 15px;font-size:14px}
.nav-cta:hover,.btn-primary:hover{
  background:var(--blue-dark);
  transform:translateY(-2px);
  box-shadow:0 8px 18px rgba(36,87,197,.2);
}
.btn-primary:active,.nav-cta:active{transform:translateY(0)}
.btn-secondary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 19px;
  border:1px solid var(--line);
  border-radius:13px;
  background:#fff;
  color:var(--blue);
  font-weight:700;
  transition:border-color .22s,background .22s,transform .22s,box-shadow .22s;
}
.btn-secondary:hover{
  border-color:var(--blue);
  background:#f6f9ff;
  transform:translateY(-2px);
  box-shadow:0 8px 18px rgba(31,66,122,.08);
}
.nav-link:focus-visible,
.brand:focus-visible,
.nav-cta:focus-visible,
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.menu-toggle:focus-visible,
.filter-chip:focus-visible,
.faq-button:focus-visible,
.text-link:focus-visible{
  outline:3px solid rgba(49,167,200,.45);
  outline-offset:3px;
}
.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  background:#fff;
  color:var(--blue);
  border-radius:10px;
  width:42px;
  height:42px;
  transition:border-color .2s,background .2s;
}
.menu-toggle:hover{border-color:var(--blue);background:#f4f8ff}
.menu-icon,.menu-icon::before,.menu-icon::after{
  display:block;
  width:19px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:.22s;
}
.menu-icon{position:relative}
.menu-icon::before,.menu-icon::after{content:"";position:absolute;left:0}
.menu-icon::before{top:-6px}
.menu-icon::after{top:6px}
.menu-toggle[aria-expanded="true"] .menu-icon{background:transparent}
.menu-toggle[aria-expanded="true"] .menu-icon::before{top:0;transform:rotate(45deg)}
.menu-toggle[aria-expanded="true"] .menu-icon::after{top:0;transform:rotate(-45deg)}

/* 面包屑 */
.breadcrumb-bar{
  background:#edf4ff;
  border-bottom:1px solid #d5e2f4;
}
.breadcrumb-inner{
  min-height:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  font-size:14px;
}
.breadcrumb-list{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:9px;
  margin:0;
  padding:0;
  list-style:none;
}
.breadcrumb-list a{color:var(--blue);font-weight:700}
.breadcrumb-list a:hover{text-decoration:underline;text-underline-offset:4px}
.breadcrumb-list span[aria-hidden="true"]{color:#9aaac0}
.breadcrumb-current{color:var(--muted)}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--blue);
  font-weight:700;
  white-space:nowrap;
}
.back-link:hover{color:var(--blue-dark)}

/* 公共组件 */
.section{padding:96px 0}
.section-white{background:var(--paper)}
.section-head{max-width:730px;margin-bottom:38px}
.section-kicker{
  color:var(--blue);
  font-size:13px;
  font-weight:800;
  letter-spacing:1px;
}
.section h2{
  margin:8px 0 13px;
  color:var(--ink);
  font-size:clamp(29px,4vw,42px);
  line-height:1.25;
  font-weight:800;
}
.section-head p{margin:0;color:var(--text);font-size:17px}
.eyebrow,.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--blue);
  background:#edf4ff;
  border:1px solid #cbdcf8;
  border-radius:11px;
  padding:5px 10px;
  font-size:13px;
  font-weight:700;
}
.eyebrow::before{
  content:"";
  width:7px;
  height:7px;
  background:var(--cyan);
  border-radius:50%;
}
.tag.coral{color:#9c4434;background:#fff3ef;border-color:#f5c8bf}
.card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--paper);
  box-shadow:var(--shadow);
}
.lift-card{transition:transform .24s,border-color .24s,box-shadow .24s}
.lift-card:hover{
  transform:translateY(-5px);
  border-color:#bfd0e8;
  box-shadow:var(--shadow-hover);
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--blue);
  font-weight:700;
}
.text-link span{transition:transform .2s}
.text-link:hover span{transform:translateX(5px)}

/* 分类首屏 */
.category-hero{
  position:relative;
  padding:82px 0 92px;
  overflow:hidden;
  background:
    radial-gradient(circle at 84% 22%,rgba(49,167,200,.12),transparent 27%),
    linear-gradient(135deg,#f5f8fc 0%,#fff 75%);
}
.category-hero::before{
  content:"";
  position:absolute;
  left:-130px;
  bottom:-170px;
  width:410px;
  height:410px;
  border:1px solid rgba(36,87,197,.1);
  border-radius:50%;
}
.category-hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:5fr 7fr;
  align-items:center;
  gap:64px;
}
.category-hero h1{
  margin:19px 0 20px;
  color:var(--ink);
  font-size:clamp(38px,5.1vw,60px);
  line-height:1.16;
  font-weight:800;
}
.hero-summary{
  margin:0;
  max-width:580px;
  color:var(--text);
  font-size:18px;
  line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:27px}
.hero-tags span{
  padding:5px 9px;
  color:var(--muted);
  font-size:13px;
  border-left:2px solid #cbdcf8;
}
.hero-collage{
  position:relative;
  min-height:430px;
}
.feature-visual{
  position:absolute;
  left:0;
  top:34px;
  width:79%;
  min-height:345px;
  padding:32px;
  overflow:hidden;
  border:9px solid #fff;
  border-radius:22px;
  background:
    linear-gradient(135deg,rgba(255,255,255,.68),transparent 42%),
    linear-gradient(145deg,#cce9f4 0%,#8bb9e4 48%,#315eb9 100%);
  box-shadow:var(--shadow-hover);
}
.feature-visual::before{
  content:"";
  position:absolute;
  right:-50px;
  top:-68px;
  width:250px;
  height:250px;
  border:1px solid rgba(255,255,255,.7);
  border-radius:50%;
}
.feature-visual::after{
  content:"";
  position:absolute;
  right:54px;
  bottom:38px;
  width:115px;
  height:115px;
  border:18px solid rgba(255,255,255,.18);
  border-radius:50%;
}
.visual-index{
  position:relative;
  z-index:1;
  display:inline-block;
  color:#fff;
  font-size:13px;
  font-weight:800;
  letter-spacing:2px;
}
.visual-copy{
  position:absolute;
  left:32px;
  right:32px;
  bottom:31px;
  z-index:1;
  color:#fff;
}
.visual-copy strong{display:block;font-size:28px;line-height:1.3}
.visual-copy span{display:block;margin-top:8px;font-size:14px}
.poster-small{
  position:absolute;
  right:0;
  bottom:0;
  z-index:2;
  width:33%;
  aspect-ratio:2/3;
  padding:21px;
  overflow:hidden;
  border:8px solid #fff;
  border-radius:18px;
  background:
    linear-gradient(170deg,rgba(255,255,255,.55),transparent 42%),
    linear-gradient(145deg,#e7edf8,#8ca6dc 56%,#3a5da6);
  box-shadow:var(--shadow);
}
.poster-small::after{
  content:"";
  position:absolute;
  left:23px;
  right:23px;
  bottom:26px;
  height:2px;
  background:rgba(255,255,255,.72);
  box-shadow:0 -13px 0 rgba(255,255,255,.4),0 -26px 0 rgba(255,255,255,.25);
}
.poster-label{
  position:relative;
  z-index:1;
  color:#fff;
  font-size:12px;
  font-weight:800;
  letter-spacing:1px;
}

/* 静态浏览维度 */
.filter-strip{
  position:relative;
  z-index:4;
  margin-top:-30px;
}
.filter-panel{
  display:grid;
  grid-template-columns:180px 1fr;
  align-items:center;
  gap:25px;
  padding:24px 28px;
  border:1px solid var(--line);
  border-radius:18px;
  background:#fff;
  box-shadow:var(--shadow);
}
.filter-title{color:var(--ink);font-weight:800}
.filter-title small{display:block;color:var(--muted);font-size:12px;font-weight:500}
.filter-options{display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.filter-chip{
  display:inline-flex;
  min-height:38px;
  align-items:center;
  padding:0 13px;
  border:1px solid var(--line);
  border-radius:11px;
  background:#f9fbfe;
  color:var(--text);
  font-size:14px;
  font-weight:700;
  transition:.2s;
}
.filter-chip:hover,.filter-chip.active{
  color:var(--blue);
  border-color:#bcd0ee;
  background:#edf4ff;
}

/* 编辑式精选区 */
.editorial-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:28px;
  align-items:stretch;
}
.feature-card{overflow:hidden}
.abstract-cover{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:
    radial-gradient(circle at 73% 31%,rgba(255,255,255,.72) 0 8%,transparent 8.5%),
    linear-gradient(145deg,#d5eef5 0%,#92bee2 42%,#3967bd 100%);
}
.abstract-cover::before{
  content:"";
  position:absolute;
  left:10%;
  top:14%;
  width:38%;
  height:72%;
  border:1px solid rgba(255,255,255,.68);
  border-radius:120px 120px 20px 20px;
  transform:rotate(-7deg);
}
.abstract-cover::after{
  content:"";
  position:absolute;
  right:8%;
  bottom:-25%;
  width:47%;
  aspect-ratio:1;
  border:28px solid rgba(255,255,255,.15);
  border-radius:50%;
}
.cover-number{
  position:absolute;
  left:27px;
  top:23px;
  z-index:2;
  color:#fff;
  font-size:13px;
  font-weight:800;
  letter-spacing:2px;
}
.feature-card-body{padding:31px 33px 34px}
.feature-card-body h3{
  margin:14px 0 10px;
  color:var(--ink);
  font-size:27px;
  line-height:1.35;
}
.feature-card-body p{margin:0;color:var(--text)}
.content-meta{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  margin-top:17px;
  color:var(--muted);
  font-size:13px;
}
.feature-card-body .text-link{margin-top:22px}
.recommend-panel{padding:31px}
.recommend-panel h3{
  margin:0 0 5px;
  color:var(--ink);
  font-size:23px;
}
.recommend-intro{margin:0 0 13px;color:var(--muted);font-size:14px}
.rank-list{margin:0;padding:0;list-style:none}
.rank-item{
  display:grid;
  grid-template-columns:42px 1fr;
  gap:14px;
  padding:19px 0;
  border-bottom:1px solid var(--line);
}
.rank-item:last-child{border-bottom:0}
.rank-number{
  display:flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:11px;
  background:#edf4ff;
  color:var(--blue);
  font-size:13px;
  font-weight:800;
}
.rank-item:first-child .rank-number{background:#fff1ed;color:#a64a38}
.rank-item h4{margin:0;color:var(--ink);font-size:17px}
.rank-item p{margin:4px 0 0;color:var(--muted);font-size:13px;line-height:1.6}

/* 横向内容与建议 */
.browse-layout{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(280px,4fr);
  gap:30px;
  align-items:start;
}
.content-stack{display:grid;gap:22px}
.horizontal-card{
  display:grid;
  grid-template-columns:245px 1fr;
  overflow:hidden;
}
.mini-cover{
  position:relative;
  min-height:242px;
  overflow:hidden;
  background:
    linear-gradient(155deg,rgba(255,255,255,.58),transparent 43%),
    linear-gradient(145deg,#dcecf9,#82acd8 55%,#315ba7);
}
.mini-cover.alt{
  background:
    linear-gradient(165deg,rgba(255,255,255,.62),transparent 44%),
    linear-gradient(145deg,#d8f0f2,#70b4c8 52%,#32649c);
}
.mini-cover.warm{
  background:
    linear-gradient(165deg,rgba(255,255,255,.65),transparent 40%),
    linear-gradient(145deg,#f5e4df,#a8badb 52%,#4a68aa);
}
.mini-cover::before{
  content:"";
  position:absolute;
  width:130px;
  height:190px;
  left:46px;
  top:29px;
  border:1px solid rgba(255,255,255,.67);
  border-radius:65px 65px 18px 18px;
  transform:rotate(-8deg);
}
.mini-index{
  position:absolute;
  left:20px;
  top:18px;
  color:#fff;
  font-size:12px;
  font-weight:800;
  letter-spacing:1.5px;
}
.horizontal-body{
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:27px 30px;
}
.horizontal-body h3{
  margin:12px 0 8px;
  color:var(--ink);
  font-size:22px;
  line-height:1.4;
}
.horizontal-body p{
  display:-webkit-box;
  margin:0;
  overflow:hidden;
  color:var(--text);
  -webkit-box-orient:vertical;
  -webkit-line-clamp:3;
}
.horizontal-body .text-link{margin-top:16px}
.guide-aside{
  position:sticky;
  top:106px;
  padding:29px;
  border:1px solid #cbdcf8;
  border-radius:var(--radius);
  background:#edf5ff;
}
.guide-aside h3{margin:0;color:var(--ink);font-size:23px}
.guide-aside > p{margin:7px 0 20px;color:var(--text);font-size:14px}
.guide-steps{margin:0;padding:0;list-style:none}
.guide-step{
  position:relative;
  display:grid;
  grid-template-columns:35px 1fr;
  gap:12px;
  padding:0 0 22px;
}
.guide-step:last-child{padding-bottom:0}
.guide-step:not(:last-child)::after{
  content:"";
  position:absolute;
  left:16px;
  top:34px;
  bottom:3px;
  width:1px;
  background:#bdd2ee;
}
.guide-step b{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:center;
  width:33px;
  height:33px;
  border:1px solid #bdd2ee;
  border-radius:10px;
  background:#fff;
  color:var(--blue);
  font-size:12px;
}
.guide-step strong{display:block;color:var(--ink);font-size:15px}
.guide-step span{display:block;margin-top:3px;color:var(--muted);font-size:13px;line-height:1.6}

/* 选择检查项 */
.check-panel{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:45px;
  padding:44px;
}
.check-intro h2{margin-top:7px}
.check-intro p{margin:0}
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check-item{
  padding:20px;
  border:1px solid var(--line);
  border-radius:15px;
  background:#f9fbfe;
}
.check-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  margin-bottom:12px;
  border-radius:10px;
  background:#e9f2ff;
  color:var(--blue);
}
.check-item h3{margin:0;color:var(--ink);font-size:17px}
.check-item p{margin:5px 0 0;color:var(--muted);font-size:13px;line-height:1.65}

/* FAQ 与跨分类 CTA */
.faq-cta-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:46px;
  align-items:start;
}
.cross-card{
  position:relative;
  overflow:hidden;
  padding:38px;
  border:1px solid #cbdcf8;
  border-radius:var(--radius);
  background:linear-gradient(145deg,#eaf4ff,#fff);
}
.cross-card::after{
  content:"";
  position:absolute;
  right:-75px;
  top:-65px;
  width:210px;
  height:210px;
  border:1px solid rgba(49,167,200,.24);
  border-radius:50%;
}
.cross-card h2{
  position:relative;
  z-index:1;
  margin:10px 0 12px;
  font-size:32px;
}
.cross-card p{position:relative;z-index:1;margin:0}
.cross-actions{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  gap:11px;
  margin-top:25px;
}
.faq-list{
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  box-shadow:var(--shadow);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-button{
  width:100%;
  min-height:70px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:19px 23px;
  border:0;
  background:#fff;
  color:var(--ink);
  text-align:left;
  font-weight:800;
  transition:background .2s,color .2s;
}
.faq-button:hover{background:#f7faff;color:var(--blue)}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:24px;
  height:24px;
  border-radius:8px;
  background:#edf4ff;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:6px;
  right:6px;
  top:11px;
  height:2px;
  border-radius:2px;
  background:var(--blue);
  transition:transform .22s;
}
.faq-icon::after{transform:rotate(90deg)}
.faq-button[aria-expanded="true"] .faq-icon::after{transform:rotate(0)}
.faq-answer{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .25s ease;
}
.faq-answer > div{overflow:hidden}
.faq-answer p{margin:0;padding:0 23px 21px;color:var(--text)}
.faq-item.open .faq-answer{grid-template-rows:1fr}

/* 页脚 */
.site-footer{
  padding:66px 0 25px;
  border-top:1px solid var(--line);
  background:#fff;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:60px;
  padding-bottom:42px;
}
.footer-title{margin-bottom:13px;color:var(--ink);font-weight:800}
.footer-copy{max-width:490px;margin:0;color:var(--muted)}
.footer-links{display:grid;gap:9px}
.footer-links a{width:max-content;color:var(--text);font-size:14px;transition:color .2s,transform .2s}
.footer-links a:hover{color:var(--blue);transform:translateX(3px)}
.copyright{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding-top:22px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:13px;
}

@media (max-width:1023px){
  .section{padding:76px 0}
  .category-hero{padding:68px 0 78px}
  .category-hero-grid{gap:38px}
  .hero-collage{min-height:370px}
  .feature-visual{min-height:300px}
  .editorial-grid{grid-template-columns:1fr}
  .recommend-panel{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}
  .recommend-panel h3,.recommend-intro{grid-column:1/-1}
  .browse-layout{grid-template-columns:1fr}
  .guide-aside{position:relative;top:auto}
  .guide-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
  .guide-step{display:block;padding:0}
  .guide-step:not(:last-child)::after{display:none}
  .guide-step b{margin-bottom:9px}
  .check-panel{grid-template-columns:1fr}
  .faq-cta-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .container{width:min(100% - 30px,1200px)}
  .nav-wrap{min-height:68px}
  .brand{font-size:15px;max-width:calc(100% - 58px);white-space:normal;line-height:1.35}
  .menu-toggle{display:flex;flex:0 0 auto}
  .nav-links{
    position:absolute;
    left:15px;
    right:15px;
    top:75px;
    display:none;
    align-items:stretch;
    flex-direction:column;
    gap:5px;
    padding:15px;
    border:1px solid var(--line);
    border-radius:16px;
    background:#fff;
    box-shadow:var(--shadow-hover);
  }
  .nav-links.open{display:flex}
  .nav-link{padding:12px 14px}
  .nav-link.active::after{display:none}
  .nav-cta{margin-top:4px;min-height:46px}
  .breadcrumb-inner{align-items:flex-start;flex-direction:column;gap:4px;padding:10px 0}
  .category-hero{padding:54px 0 66px}
  .category-hero-grid{grid-template-columns:1fr}
  .category-hero h1{font-size:clamp(35px,10vw,44px)}
  .hero-summary{font-size:16px}
  .hero-actions a{flex:1 1 100%}
  .hero-collage{min-height:390px}
  .feature-visual{width:88%;padding:24px}
  .visual-copy{left:24px;right:24px;bottom:25px}
  .visual-copy strong{font-size:23px}
  .poster-small{width:38%}
  .filter-panel{grid-template-columns:1fr;gap:13px;padding:20px}
  .filter-options{flex-wrap:nowrap;overflow-x:auto;padding-bottom:3px}
  .filter-chip{flex:0 0 auto}
  .section{padding:62px 0}
  .section-head{margin-bottom:28px}
  .feature-card-body{padding:25px}
  .recommend-panel{display:block;padding:25px}
  .horizontal-card{grid-template-columns:1fr}
  .mini-cover{min-height:205px;aspect-ratio:16/9}
  .horizontal-body{padding:24px}
  .guide-steps{grid-template-columns:1fr}
  .check-panel{padding:28px 23px;gap:28px}
  .check-grid{grid-template-columns:1fr}
  .cross-card{padding:29px 24px}
  .cross-card h2{font-size:28px}
  .cross-actions a{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:35px}
  .footer-grid > div:first-child{grid-column:1/-1}
}
@media (max-width:520px){
  .container{width:min(100% - 24px,1200px)}
  .category-hero h1{font-size:35px}
  .hero-collage{min-height:335px}
  .feature-visual{top:20px;min-height:270px;border-width:6px}
  .poster-small{border-width:6px;padding:15px}
  .visual-copy span{display:none}
  .filter-strip{margin-top:-22px}
  .section{padding:54px 0}
  .feature-card-body h3{font-size:23px}
  .content-meta{gap:8px 14px}
  .faq-button{padding:17px 18px}
  .faq-answer p{padding:0 18px 19px}
  .footer-grid{grid-template-columns:1fr}
  .footer-grid > div:first-child{grid-column:auto}
  .copyright{align-items:flex-start;flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    scroll-behavior:auto!important;
    transition-duration:.01ms!important;
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
  }
  .lift-card:hover,.btn-primary:hover,.btn-secondary:hover,.nav-cta:hover{transform:none}
}