/* 91wa-online.cloud content site styles */
:root{--purple:#6D28D9;--purple-soft:#A78BFA;--ink:#27242D;--muted:#716B78;--deep:#17151C;--bg:#F7F5FA;--soft:#ECE8F2;--accent:#F59E0B;--white:#fff;--line:#d9d3df;--shadow:0 18px 50px rgba(31,23,40,.09);--radius:22px;--max:1180px;--reading:780px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.72;text-rendering:optimizeLegibility}body.modal-open{overflow:hidden}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.skip-link{position:fixed;left:16px;top:-80px;z-index:999;background:var(--deep);color:#fff;padding:10px 16px;border-radius:10px}.skip-link:focus{top:16px}.site-header{position:sticky;top:0;z-index:100;background:rgba(247,245,250,.96);backdrop-filter:blur(18px);border-bottom:1px solid rgba(109,40,217,.09)}.header-inner{width:min(var(--max),calc(100% - 40px));height:74px;margin:auto;display:flex;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.03em}.brand img{width:40px;height:40px;object-fit:cover;border-radius:12px}.brand-word,.brand-mark{font-size:1.35rem;color:var(--purple)}.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto}.site-nav a{padding:10px 12px;border-radius:10px;color:var(--muted);font-size:.95rem}.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--purple);background:rgba(109,40,217,.08)}.search-open,.menu-toggle{border:1px solid var(--line);background:#fff;color:var(--ink);padding:10px 14px;border-radius:12px}.search-open:hover,.menu-toggle:hover{border-color:var(--purple);color:var(--purple)}.menu-toggle{display:none}.search-modal[hidden]{display:none!important}.search-modal{position:fixed;inset:0;z-index:300;background:rgba(23,21,28,.72);display:grid;place-items:start center;padding:12vh 20px 30px}.search-panel{width:min(720px,100%);background:#fff;border-radius:26px;padding:34px;box-shadow:0 30px 90px rgba(0,0,0,.25);position:relative}.search-close{position:absolute;right:18px;top:14px;border:0;background:transparent;font-size:2rem;color:var(--muted)}.search-panel h2{margin:0 0 10px;font-size:clamp(1.6rem,3vw,2.2rem)}.search-panel p{color:var(--muted)}.search-panel label,.page-search label{display:block;font-weight:700;margin-bottom:8px}.search-row{display:flex;gap:10px}.search-row input{min-width:0;flex:1;border:1px solid var(--line);background:var(--bg);border-radius:13px;padding:13px 15px;outline:none}.search-row input:focus{border-color:var(--purple);box-shadow:0 0 0 3px rgba(109,40,217,.1)}.btn{display:inline-flex;justify-content:center;align-items:center;min-height:46px;padding:10px 18px;border-radius:13px;border:1px solid transparent;font-weight:750;line-height:1.3}.btn-primary{background:var(--accent);color:#2e2108}.btn-primary:hover{filter:brightness(.96)}.btn-secondary{background:#fff;border-color:var(--line);color:var(--purple)}.btn-secondary:hover{border-color:var(--purple)}.text-link{display:inline-flex;color:var(--purple);font-weight:750;border-bottom:1px solid rgba(109,40,217,.3);padding-bottom:2px}.text-link:hover{border-color:var(--purple)}.light-link{color:#e8ddff;border-color:rgba(232,221,255,.4)}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:800;color:var(--purple);margin:0 0 12px}.section-dark .eyebrow{color:#c7afff}.lead{font-size:1.12rem;color:#4f4957}.inline-actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}.section-pad{padding:76px max(20px,calc((100vw - var(--max))/2))}.soft-bg{background:var(--soft)}.section-dark{background:var(--deep);color:#f7f2ff}.section-heading{max-width:820px;margin-bottom:34px}.section-heading h2,.compact-heading h2{font-size:clamp(1.75rem,3vw,2.65rem);line-height:1.18;letter-spacing:-.03em;margin:0 0 14px}.section-heading p,.compact-heading p{color:var(--muted);margin:0}.section-dark .section-heading p{color:#c5beca}.compact-heading{max-width:760px}.home-lead{width:min(var(--max),calc(100% - 40px));margin:42px auto 0;display:grid;grid-template-columns:1.08fr .92fr;gap:42px;align-items:center;padding:40px 0 72px}.home-lead h1{font-size:clamp(2.4rem,5vw,4.9rem);line-height:1.04;letter-spacing:-.055em;margin:0 0 22px;max-width:820px}.home-lead__visual{margin:0;position:relative}.home-lead__visual img{width:100%;aspect-ratio:1.12/1;object-fit:cover;border-radius:30px;box-shadow:var(--shadow)}.home-lead__visual figcaption{font-size:.86rem;color:var(--muted);margin-top:10px}.lead-points{padding:0;margin:28px 0 0;list-style:none;display:grid;gap:10px}.lead-points li{padding-left:18px;position:relative}.lead-points li:before{content:"";width:7px;height:7px;background:var(--purple);border-radius:50%;position:absolute;left:0;top:.72em}.brand-strip{display:grid;grid-template-columns:.75fr 1.25fr;gap:50px;align-items:start}.editorial-links{border-top:1px solid var(--line)}.editorial-links a{display:grid;grid-template-columns:180px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}.editorial-links a:hover strong{color:var(--purple)}.editorial-links strong{font-size:1.05rem}.editorial-links span{color:var(--muted)}.video-feature__head{width:min(var(--max),calc(100% - 40px));margin:auto;display:flex;align-items:end;justify-content:space-between;gap:30px}.video-feature__head>div{max-width:760px}.video-feature__head h2{font-size:clamp(2rem,4vw,3.4rem);line-height:1.12;margin:0 0 14px;letter-spacing:-.04em}.video-feature__head p{color:#c8c0cc}.feature-layout{width:min(var(--max),calc(100% - 40px));margin:38px auto 0;display:grid;grid-template-columns:1.05fr .95fr;gap:42px}.feature-image{margin:0}.feature-image img{width:100%;height:100%;min-height:520px;object-fit:cover;border-radius:24px}.feature-list{display:grid;align-content:start}.feature-list article{display:grid;grid-template-columns:46px 1fr;gap:14px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12)}.feature-list h3{font-size:1.05rem;margin:0 0 6px;line-height:1.35}.feature-list h3 a:hover{color:var(--purple-soft)}.feature-list p{font-size:.91rem;color:#bfb6c4;margin:0}.feature-number{font-variant-numeric:tabular-nums;color:var(--purple-soft);font-weight:800}.free-note{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}.free-note__image img{border-radius:22px;aspect-ratio:1.45/1;object-fit:cover}.free-note h2{font-size:clamp(1.8rem,3vw,2.8rem);line-height:1.18;margin:0 0 18px}.plain-list,.check-list{padding-left:1.2em}.plain-list li,.check-list li{margin:.5em 0}.topic-index{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.topic-index a{padding:26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:235px;display:flex;flex-direction:column}.topic-index a:hover{background:#fff}.topic-index span{color:var(--purple);font-weight:800;font-size:.82rem}.topic-index strong{font-size:1.28rem;margin:20px 0 6px}.topic-index em{font-style:normal;color:var(--muted);font-size:.9rem}.topic-index p{margin-top:auto;color:var(--muted);font-size:.94rem}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.article-card{background:#fff;border:1px solid rgba(109,40,217,.10);border-radius:18px;padding:22px;display:flex;flex-direction:column;min-height:260px}.article-card:hover{border-color:rgba(109,40,217,.35);box-shadow:0 12px 34px rgba(46,35,60,.08)}.article-card__meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:.78rem}.article-card h3{font-size:1.15rem;line-height:1.4;margin:18px 0 10px}.article-card h3 a:hover{color:var(--purple)}.article-card p{color:var(--muted);font-size:.93rem;margin:0 0 18px}.article-card .text-link{margin-top:auto;align-self:flex-start;font-size:.9rem}.dimension-tease{display:flex;align-items:center;justify-content:space-between;gap:40px}.dimension-tease>div{max-width:780px}.dimension-tease h2{font-size:clamp(1.8rem,3vw,2.6rem);margin:0 0 12px}.closing-map{display:grid;grid-template-columns:.65fr 1.35fr;gap:50px}.closing-map h2{font-size:clamp(2rem,4vw,3.5rem);line-height:1.12;margin:0}.closing-links{display:grid}.closing-links a{padding:22px 0;border-bottom:1px solid rgba(255,255,255,.14);display:grid;grid-template-columns:220px 1fr;gap:24px}.closing-links strong{color:#fff}.closing-links span{color:#c9c0cd}.closing-links a:hover strong{color:var(--purple-soft)}.site-footer{background:#100f13;color:#d3cdd6;padding:58px max(20px,calc((100vw - var(--max))/2)) 22px}.footer-inner{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:38px}.footer-intro p{max-width:430px;color:#9f97a6}.brand-footer{color:#fff;margin-bottom:15px}.brand-footer .brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--purple);color:#fff}.footer-inner h2{font-size:.85rem;color:#fff;letter-spacing:.08em;margin:0 0 14px}.footer-inner>div:not(.footer-intro){display:flex;flex-direction:column;gap:10px}.footer-inner a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#817987;font-size:.83rem}.back-to-top{position:fixed;right:20px;bottom:20px;width:44px;height:44px;border-radius:50%;border:0;background:var(--deep);color:#fff;box-shadow:var(--shadow);z-index:90}.breadcrumbs{width:min(var(--max),calc(100% - 40px));margin:22px auto 0}.breadcrumbs ol{list-style:none;display:flex;gap:8px;flex-wrap:wrap;padding:0;margin:0;color:var(--muted);font-size:.86rem}.breadcrumbs li:not(:last-child):after{content:"/";margin-left:8px;color:#aaa2ad}.breadcrumbs a:hover{color:var(--purple)}.page-shell{min-height:60vh}.page-hero{width:min(var(--max),calc(100% - 40px));margin:30px auto 0;padding:48px 0 62px}.page-hero h1{font-size:clamp(2.3rem,5vw,4.3rem);line-height:1.08;letter-spacing:-.05em;margin:0 0 22px;max-width:980px}.page-hero>p:last-child,.page-hero>div>p:last-child{font-size:1.1rem;color:var(--muted);max-width:860px}.narrow-hero{max-width:900px}.video-hero,.topic-hero,.guide-hero,.about-hero,.privacy-hero,.safety-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}.video-hero img,.topic-hero img,.guide-hero img,.about-hero img,.privacy-hero img,.safety-hero img{border-radius:24px;aspect-ratio:1.4/1;object-fit:cover}.split-info{display:grid;grid-template-columns:1.35fr .65fr;gap:56px;align-items:start}.split-info h2,.relation-table h2,.two-column-note h2,.policy-copy h2{font-size:1.65rem;line-height:1.25}.fact-panel{background:var(--deep);color:#fff;border-radius:20px;padding:26px;position:sticky;top:100px}.fact-panel h2{margin-top:0}.fact-panel ul{padding-left:1.1em;color:#d0c8d3}.fact-panel .text-link{color:#d9c7ff;border-color:#8163c8}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:16px;background:#fff}.table-wrap table{width:100%;border-collapse:collapse;min-width:720px}.table-wrap th,.table-wrap td{text-align:left;padding:16px;border-bottom:1px solid var(--line);vertical-align:top}.table-wrap th{background:var(--soft)}.video-index-layout{display:grid;grid-template-columns:220px 1fr;gap:54px;align-items:start}.sticky-index{position:sticky;top:100px;display:flex;flex-direction:column;border-left:2px solid var(--line);padding-left:18px}.sticky-index h2{font-size:.95rem}.sticky-index a{padding:7px 0;color:var(--muted)}.sticky-index a:hover{color:var(--purple)}.video-index-main h2{font-size:clamp(1.8rem,3vw,2.6rem);margin-top:0}.mini-band{display:grid;grid-template-columns:.85fr 1.15fr;gap:30px;align-items:center;background:#fff;border-radius:22px;padding:18px;margin-top:28px}.mini-band img{border-radius:16px}.mini-band h3{font-size:1.4rem;margin:0 0 10px}.inner-section{margin-top:48px;padding-top:42px;border-top:1px solid var(--line)}.number-list{counter-reset:item;list-style:none;padding:0}.number-list li{padding:15px 0 15px 46px;border-bottom:1px solid var(--line);position:relative}.number-list li:before{counter-increment:item;content:counter(item,decimal-leading-zero);position:absolute;left:0;color:var(--purple);font-weight:800}.section-more{text-align:center;margin-top:30px}.two-column-note{display:grid;grid-template-columns:1fr 1fr;gap:24px}.two-column-note>div{padding:28px;border:1px solid var(--line);border-radius:18px;background:#fff}.free-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}.free-layout figure{margin:0}.free-layout img{border-radius:22px;aspect-ratio:1.65/1;object-fit:cover}.callout-line{display:flex;align-items:center;justify-content:space-between;gap:40px}.callout-line>div{max-width:800px}.topic-map{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.topic-map a{padding:28px;background:#fff;border:1px solid var(--line);border-radius:20px;display:flex;flex-direction:column;min-height:220px}.topic-map__core{border-top:4px solid var(--purple)!important}.topic-map small{color:var(--purple);font-weight:800}.topic-map strong{font-size:1.45rem;margin:18px 0 4px}.topic-map span{color:var(--muted);font-size:.9rem}.topic-map p{margin-top:auto;color:var(--muted)}.guide-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.guide-steps article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px}.guide-steps span,.safety-list span{color:var(--purple);font-weight:850}.guide-steps h2,.safety-list h2{font-size:1.35rem}.dimension-note{display:grid;grid-template-columns:1fr 1fr;gap:22px}.dimension-note>div{padding:26px;background:#fff;border-left:4px solid var(--purple);border-radius:0 18px 18px 0}.article-detail{width:min(var(--max),calc(100% - 40px));margin:0 auto;padding:34px 0 74px}.article-head{max-width:920px;padding:22px 0 30px}.article-head h1{font-size:clamp(2.35rem,5vw,4.2rem);line-height:1.08;letter-spacing:-.045em;margin:0 0 20px}.article-summary{font-size:1.12rem;color:var(--muted);max-width:800px}.article-cover{margin:0 0 46px}.article-cover img{width:100%;max-height:560px;object-fit:cover;border-radius:26px}.article-body{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:58px;align-items:start}.article-copy{font-size:1.03rem}.article-copy p{margin:0 0 1.3em}.article-copy h2{font-size:1.8rem;line-height:1.25;margin:2.2em 0 .7em}.article-copy .check-list{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px 24px 20px 46px}.article-side{position:sticky;top:100px;display:grid;gap:18px}.side-card{padding:22px;background:var(--soft);border-radius:18px}.side-card span{display:block;color:var(--muted);font-size:.82rem}.side-card strong{display:block;color:var(--purple);font-size:1.2rem;margin:8px 0}.side-card p{font-size:.9rem;color:var(--muted)}.article-related{margin-top:68px;padding-top:52px;border-top:1px solid var(--line)}.search-page{width:min(980px,calc(100% - 40px));margin:0 auto;padding:52px 0 80px}.search-page h1{font-size:clamp(2.2rem,5vw,3.8rem);line-height:1.1;letter-spacing:-.04em}.page-search{margin:30px 0}.empty-state{background:#fff;border:1px dashed #c8bdce;border-radius:20px;padding:34px;margin-top:30px}.search-count{color:var(--muted);margin:24px 0}.faq-list{max-width:940px;margin:auto}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:16px;margin:12px 0;overflow:hidden}.faq-list summary{font-weight:760;padding:18px 22px;cursor:pointer}.faq-list details[open] summary{border-bottom:1px solid var(--line);color:var(--purple)}.faq-list details div{padding:18px 22px;color:var(--muted)}.faq-list p{margin:0}.principles{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.principles article,.contact-grid article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px}.principles h2,.contact-grid h2{margin-top:0}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:1000px;margin:auto}.policy-copy{max-width:850px;margin:auto}.policy-copy code{background:var(--soft);padding:2px 6px;border-radius:6px}.safety-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.safety-list article{background:#fff;border:1px solid var(--line);padding:26px;border-radius:18px}
@media (max-width:1100px){.topic-index{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:repeat(2,1fr)}.footer-inner{grid-template-columns:1.2fr 1fr 1fr}.footer-inner>div:last-child{grid-column:2/4}.home-lead{grid-template-columns:1fr 1fr}.feature-layout{grid-template-columns:.9fr 1.1fr}.closing-map{grid-template-columns:1fr}.closing-links a{grid-template-columns:200px 1fr}}
@media (max-width:900px){.header-inner{height:68px}.menu-toggle{display:inline-flex;margin-left:auto}.site-nav{position:absolute;left:20px;right:20px;top:72px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px;display:none;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}.site-nav.is-open{display:flex}.site-nav a{padding:11px 12px}.search-open{padding:9px 11px}.home-lead,.brand-strip,.feature-layout,.free-note,.video-hero,.topic-hero,.guide-hero,.about-hero,.privacy-hero,.safety-hero,.split-info,.free-layout{grid-template-columns:1fr}.home-lead__visual{order:-1}.home-lead__visual img{max-height:460px}.feature-image img{min-height:360px;max-height:480px}.fact-panel{position:static}.video-index-layout{grid-template-columns:1fr}.sticky-index{position:static;display:flex;flex-direction:row;flex-wrap:wrap;gap:8px;border-left:0;border-bottom:1px solid var(--line);padding:0 0 16px}.sticky-index h2{width:100%;margin:0}.sticky-index a{padding:5px 9px;background:#fff;border-radius:8px}.article-body{grid-template-columns:1fr}.article-side{position:static;grid-template-columns:1fr 1fr}.footer-inner{grid-template-columns:1fr 1fr}.footer-intro{grid-column:1/3}.footer-inner>div:last-child{grid-column:auto}.guide-steps{grid-template-columns:1fr}.article-detail{padding-top:15px}}
@media (max-width:700px){.header-inner{width:min(100% - 24px,var(--max));gap:10px}.brand img{width:36px;height:36px}.brand-word{display:none}.search-open{font-size:.86rem}.section-pad{padding:54px 16px}.home-lead{width:calc(100% - 32px);margin-top:18px;padding-bottom:48px;gap:24px}.home-lead h1{font-size:2.4rem}.home-lead__visual img{border-radius:20px}.inline-actions .btn{width:100%}.editorial-links a{grid-template-columns:1fr;gap:4px}.video-feature__head,.feature-layout{width:calc(100% - 32px)}.video-feature__head{align-items:start;flex-direction:column}.feature-list article{grid-template-columns:38px 1fr}.topic-index,.topic-map,.two-column-note,.dimension-note,.principles,.contact-grid,.safety-list{grid-template-columns:1fr}.topic-index a{min-height:190px}.article-grid{grid-template-columns:1fr}.dimension-tease,.callout-line{align-items:flex-start;flex-direction:column}.closing-links a{grid-template-columns:1fr;gap:6px}.footer-inner{grid-template-columns:1fr}.footer-intro{grid-column:auto}.footer-inner>div:last-child{grid-column:auto}.footer-bottom{flex-direction:column}.page-hero{width:calc(100% - 32px);padding:32px 0 46px}.page-hero h1{font-size:2.35rem}.mini-band{grid-template-columns:1fr}.article-detail{width:calc(100% - 32px)}.article-head h1{font-size:2.35rem}.article-cover img{border-radius:18px}.article-side{grid-template-columns:1fr}.search-row{flex-direction:column}.search-panel{padding:26px 20px}.search-modal{padding:8vh 14px 20px}.breadcrumbs{width:calc(100% - 32px)}.topic-map a{min-height:190px}.footer-inner{gap:26px}}
@media (max-width:420px){.header-inner{width:calc(100% - 18px)}.search-open{padding:8px 9px}.menu-toggle{padding:8px 10px}.home-lead h1,.page-hero h1,.article-head h1{font-size:2.05rem}.section-pad{padding-left:12px;padding-right:12px}.article-card{padding:18px}.feature-list p{font-size:.86rem}.site-footer{padding-left:16px;padding-right:16px}}