/* 91视频 · original brand system | external stylesheet */
:root {
  --ink: #1f3157;
  --ink-2: #26345b;
  --muted: #63708b;
  --paper: #fffaf4;
  --surface: #ffffff;
  --peach: #dbe9ff;
  --coral: #5d9ded;
  --coral-deep: #e8554a;
  --aqua: #68ddd3;
  --aqua-deep: #189f9a;
  --sun: #ffd568;
  --line: #e8e7eb;
  --shadow: 0 18px 50px rgba(20, 31, 63, .10);
  --shadow-sm: 0 8px 25px rgba(20, 31, 63, .08);
  --radius: 24px;
  --radius-sm: 14px;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--paper); color: var(--ink); font: 16px/1.72 "PingFang SC", "Microsoft YaHei", Arial, sans-serif; text-rendering: optimizeLegibility; }
body.is-menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
button, input { font: inherit; }
button { cursor: pointer; }
.site-shell { overflow: hidden; }
.skip-link { position: absolute; left: 12px; top: -52px; z-index: 100; padding: 9px 16px; background: var(--ink); color: #fff; border-radius: 9px; transition: top .2s ease; }
.skip-link:focus { top: 10px; }
.container { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
.site-header { position: sticky; z-index: 50; top: 0; background: rgba(255,250,244,.93); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(18,28,58,.06); }
.header-top { display: flex; gap: 20px; align-items: center; min-height: 76px; }
.brand-logo { display: inline-flex; flex: 0 0 auto; width: 168px; }
.brand-logo img { width: 168px; height: 52px; }
.main-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.main-nav a { position: relative; padding: 9px 11px; border-radius: 10px; color: var(--ink-2); font-size: 14px; font-weight: 700; white-space: nowrap; transition: color .2s ease, background .2s ease; }
.main-nav a:hover, .main-nav a[aria-current="page"] { background: var(--peach); color: var(--coral-deep); }
.menu-toggle { display: none; width: 42px; height: 40px; border: 0; background: var(--ink); color: #fff; border-radius: 10px; margin-left: auto; }
.search-band { border-top: 1px solid rgba(18,28,58,.06); background: #fffdf9; }
.search-row { display: flex; gap: 12px; padding: 11px 0; align-items: center; }
.search-form { position: relative; width: min(690px, 100%); }
.search-form input { width: 100%; border: 1px solid var(--line); min-height: 44px; padding: 10px 108px 10px 16px; background: #fff; color: var(--ink); outline: 0; border-radius: 12px; box-shadow: 0 3px 9px rgba(20,31,63,.03); }
.search-form input:focus { border-color: var(--aqua-deep); box-shadow: 0 0 0 4px rgba(104,221,211,.22); }
.search-form button { position: absolute; right: 5px; top: 5px; height: 34px; padding: 0 14px; border: 0; border-radius: 8px; color: #fff; background: var(--ink); font-weight: 700; }
.search-tip { color: var(--muted); font-size: 13px; }
.search-feedback { min-height: 20px; margin: 0; color: var(--aqua-deep); font-size: 13px; }
.hero { position: relative; min-height: 594px; display: flex; align-items: stretch; overflow: hidden; background: #e9e7ec; }
.hero-media { position: absolute; inset: 0; background-position: center; background-size: cover; background-image: url("../images/hero-life-anime.jpg"); }
.hero-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,250,244,.97) 0%, rgba(255,250,244,.90) 29%, rgba(255,250,244,.20) 64%, rgba(18,28,58,.04) 100%); }
.hero-inner { position: relative; z-index: 2; width: min(var(--max), calc(100% - 40px)); padding: 76px 0 66px; margin-inline: auto; }
.eyebrow { display: inline-flex; gap: 8px; align-items: center; max-width: 100%; padding: 6px 11px; background: rgba(255,229,208,.91); color: var(--coral-deep); border: 1px solid rgba(232,85,74,.15); border-radius: 999px; font-size: 13px; font-weight: 800; letter-spacing: .04em; }
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 4px rgba(255,120,104,.16); }
.hero-copy { max-width: 630px; }
.hero h1 { max-width: 640px; margin: 19px 0 14px; color: var(--ink); font-size: clamp(38px, 5vw, 68px); line-height: 1.12; letter-spacing: -.055em; }
.hero h1 .accent { color: var(--coral-deep); }
.hero .lead { max-width: 570px; margin: 0; color: var(--ink-2); font-size: 18px; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
.btn { min-height: 46px; padding: 11px 18px; border: 0; border-radius: 12px; display: inline-flex; justify-content: center; align-items: center; gap: 8px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-primary { background: var(--coral); color: #fff; }
.btn-secondary { background: #fff; color: var(--ink); border: 1px solid rgba(18,28,58,.12); }
.hero-stats { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 38px; }
.stat-pill { display: grid; grid-template-columns: auto 1fr; min-width: 152px; padding: 11px 13px; background: rgba(255,255,255,.82); border: 1px solid rgba(18,28,58,.07); border-radius: 14px; box-shadow: 0 10px 28px rgba(18,28,58,.06); }
.stat-pill strong { color: var(--coral-deep); font-size: 20px; line-height: 1.1; }
.stat-pill span { grid-column: 1 / -1; color: var(--muted); font-size: 12px; }
.section { padding: 90px 0; }
.section--tight { padding: 68px 0; }
.section--white { background: var(--surface); }
.section--ink { color: #fff; background: var(--ink); }
.section--peach { background: var(--peach); }
.section--aqua { background: #dbf8f4; }
.section-head { max-width: 780px; margin-bottom: 34px; }
.section-head.center { text-align: center; margin-inline: auto; }
.kicker { margin: 0 0 8px; color: var(--coral-deep); font-size: 13px; letter-spacing: .12em; font-weight: 900; text-transform: uppercase; }
.section--ink .kicker { color: var(--sun); }
.section h2 { margin: 0; color: var(--ink); font-size: clamp(29px, 3vw, 43px); line-height: 1.25; letter-spacing: -.035em; }
.section--ink h2 { color: #fff; }
.section-intro { margin: 13px 0 0; color: var(--muted); font-size: 16px; }
.section--ink .section-intro { color: rgba(255,255,255,.72); }
.breadcrumb { padding: 15px 0; color: var(--muted); font-size: 13px; }
.breadcrumb a { color: var(--ink-2); }
.breadcrumb span { padding: 0 6px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { position: relative; min-height: 255px; padding: 28px; overflow: hidden; background: var(--surface); border: 1px solid rgba(18,28,58,.06); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.feature-card::after { content: ""; position: absolute; right: -30px; bottom: -34px; width: 145px; height: 145px; border-radius: 50%; background: var(--peach); opacity: .75; }
.feature-card:nth-child(2)::after { background: #d8f8f3; }
.feature-card:nth-child(3)::after { background: #fff0bd; }
.feature-icon { display: grid; width: 50px; height: 50px; margin-bottom: 22px; place-items: center; border-radius: 14px; color: var(--coral-deep); background: var(--peach); font-size: 24px; }
.feature-card:nth-child(2) .feature-icon { color: var(--aqua-deep); background: #d8f8f3; }
.feature-card:nth-child(3) .feature-icon { color: #a87500; background: #fff0bd; }
.feature-card h3 { position: relative; z-index: 2; margin: 0 0 8px; color: var(--ink); font-size: 20px; line-height: 1.35; }
.feature-card p { position: relative; z-index: 2; margin: 0; color: var(--muted); font-size: 14px; }
.feature-card a { position: relative; z-index: 2; display: inline-flex; margin-top: 16px; color: var(--coral-deep); font-size: 14px; font-weight: 800; }
.topic-layout { display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(320px, .94fr); gap: 26px; align-items: center; }
.image-frame { position: relative; overflow: hidden; min-height: 455px; border-radius: var(--radius); box-shadow: var(--shadow); background: #ddd; }
.image-frame img { width: 100%; height: 100%; position: absolute; inset: 0; object-fit: cover; }
.image-frame .image-note { position: absolute; right: 20px; bottom: 20px; max-width: 220px; padding: 13px 15px; color: #fff; background: rgba(18,28,58,.86); border-radius: 13px; font-size: 13px; }
.topic-list { display: grid; gap: 12px; }
.topic-row { display: grid; grid-template-columns: 44px 1fr auto; gap: 13px; align-items: center; padding: 15px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
.topic-no { display: grid; width: 34px; height: 34px; place-items: center; color: var(--coral-deep); background: var(--peach); border-radius: 10px; font-weight: 900; }
.topic-row h3 { margin: 0; color: var(--ink); font-size: 16px; }
.topic-row p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.topic-row .mini-tag { color: var(--aqua-deep); font-size: 12px; font-weight: 800; }
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.video-card { overflow: hidden; background: #fff; border: 1px solid rgba(18,28,58,.07); border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); }
.video-stage { position: relative; display: block; aspect-ratio: 16 / 10; overflow: hidden; background: #293353; }
.video-stage video { width: 100%; height: 100%; object-fit: cover; opacity: .82; }
.video-stage::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(18,28,58,.52), transparent 55%); pointer-events: none; }
.video-play { position: absolute; z-index: 3; top: 50%; left: 50%; display: grid; width: 56px; height: 56px; place-items: center; transform: translate(-50%, -40%) scale(.85); opacity: 0; border: 0; border-radius: 50%; color: #fff; background: var(--coral); box-shadow: 0 7px 25px rgba(232,85,74,.38); transition: opacity .25s ease, transform .25s ease; font-size: 20px; }
.video-stage:hover .video-play, .video-stage:focus-within .video-play { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-play.is-playing { background: var(--aqua-deep); opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-caption { padding: 15px 16px 17px; }
.video-caption h3 { margin: 0; color: var(--ink); font-size: 16px; line-height: 1.5; }
.video-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; color: var(--muted); font-size: 12px; }
.video-meta strong { color: var(--coral-deep); }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 11px; }
.tag { display: inline-flex; padding: 3px 9px; color: var(--ink-2); background: #f1f4f7; border-radius: 99px; font-size: 12px; font-weight: 700; }
.tag.coral { color: var(--coral-deep); background: var(--peach); }
.tag.aqua { color: var(--aqua-deep); background: #dbf8f4; }
.split-band { display: grid; grid-template-columns: 1.06fr .94fr; gap: 0; overflow: hidden; background: var(--ink); border-radius: var(--radius); }
.split-copy { padding: 47px; }
.split-copy h2 { color: #fff; }
.split-copy p { color: rgba(255,255,255,.74); }
.split-copy .btn-secondary { background: transparent; color: #fff; border-color: rgba(255,255,255,.3); }
.split-image { min-height: 360px; background: #556; }
.split-image img { width: 100%; height: 100%; object-fit: cover; }
.ai-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.ai-card { min-height: 218px; padding: 22px; color: #fff; background: linear-gradient(145deg, #293761, #151f41); border-radius: 20px; }
.ai-card:nth-child(2) { background: linear-gradient(145deg, #135c69, #173047); }
.ai-card:nth-child(3) { background: linear-gradient(145deg, #9e5045, #3d2544); }
.ai-card:nth-child(4) { background: linear-gradient(145deg, #9c7a20, #41345c); }
.ai-card .card-num { color: var(--sun); font-size: 13px; font-weight: 900; letter-spacing: .1em; }
.ai-card h3 { margin: 24px 0 9px; color: #fff; font-size: 18px; }
.ai-card p { margin: 0; color: rgba(255,255,255,.72); font-size: 13px; }
.community-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.community-card { padding: 21px; background: rgba(255,255,255,.87); border: 1px solid rgba(18,28,58,.06); border-radius: 18px; }
.community-card .community-icon { display: grid; width: 44px; height: 44px; place-items: center; color: var(--aqua-deep); background: #d8f8f3; border-radius: 13px; font-size: 21px; }
.community-card h3 { margin: 17px 0 7px; color: var(--ink); font-size: 17px; }
.community-card p { margin: 0; color: var(--muted); font-size: 13px; }
.expert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.expert-card { padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.expert-avatar { display: grid; width: 66px; height: 66px; place-items: center; color: #fff; background: linear-gradient(135deg, var(--coral), #d451aa); border-radius: 50%; font-size: 25px; font-weight: 900; }
.expert-card:nth-child(2) .expert-avatar { background: linear-gradient(135deg, var(--aqua-deep), #2858a5); }
.expert-card:nth-child(3) .expert-avatar { background: linear-gradient(135deg, #c98a1c, #e8594e); }
.expert-card h3 { margin: 17px 0 2px; color: var(--ink); font-size: 19px; }
.expert-role { margin: 0; color: var(--coral-deep); font-size: 13px; font-weight: 800; }
.expert-card p { margin: 13px 0; color: var(--muted); font-size: 13px; }
.expert-list { padding: 0; margin: 0 0 17px; list-style: none; }
.expert-list li { padding: 5px 0; color: var(--ink-2); border-bottom: 1px dashed var(--line); font-size: 12px; }
.expert-actions { display: flex; gap: 8px; }
.text-link { color: var(--coral-deep); font-size: 13px; font-weight: 800; }
.how-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.how-card { position: relative; padding: 24px 20px 20px; background: #fff; border: 1px solid var(--line); border-radius: 18px; }
.how-card::before { content: attr(data-step); display: grid; width: 32px; height: 32px; margin-bottom: 17px; place-items: center; color: #fff; background: var(--ink); border-radius: 50%; font-weight: 900; }
.how-card h3 { margin: 0 0 7px; font-size: 17px; }
.how-card p { margin: 0; color: var(--muted); font-size: 13px; }
.partner-wall { display: flex; flex-wrap: wrap; gap: 12px; }
.partner { flex: 1 1 150px; display: grid; min-height: 78px; padding: 13px; place-items: center; color: var(--ink-2); background: #fff; border: 1px solid var(--line); border-radius: 13px; font-size: 15px; font-weight: 900; letter-spacing: .03em; }
.partner::before { content: "✦"; color: var(--coral); margin-right: 7px; }
.review-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.review-card { display: flex; flex-direction: column; padding: 22px; background: #fff; border-radius: 17px; box-shadow: var(--shadow-sm); }
.review-stars { color: #ef9d17; letter-spacing: .12em; }
.review-card blockquote { margin: 14px 0 19px; color: var(--ink-2); font-size: 14px; }
.review-person { margin-top: auto; color: var(--muted); font-size: 12px; }
.review-person strong { display: block; color: var(--ink); font-size: 13px; }
.faq-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.faq-item { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
.faq-item summary { display: flex; gap: 14px; align-items: center; padding: 18px; color: var(--ink); cursor: pointer; font-size: 15px; font-weight: 800; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before { content: "+"; flex: 0 0 auto; display: grid; width: 24px; height: 24px; place-items: center; color: var(--coral-deep); background: var(--peach); border-radius: 8px; font-size: 19px; line-height: 1; }
.faq-item[open] summary::before { content: "−"; }
.faq-item p { margin: 0; padding: 0 18px 18px 56px; color: var(--muted); font-size: 14px; }
.contact-panel { display: grid; grid-template-columns: 1.1fr .9fr; overflow: hidden; color: #fff; background: var(--ink); border-radius: var(--radius); }
.contact-copy { padding: 42px; }
.contact-copy h2 { color: #fff; }
.contact-copy p { color: rgba(255,255,255,.75); }
.contact-list { display: grid; gap: 9px; margin: 24px 0; }
.contact-list div { padding: 10px 13px; background: rgba(255,255,255,.08); border-radius: 10px; font-size: 14px; }
.contact-list strong { color: var(--sun); }
.qr-panel { display: grid; grid-template-columns: repeat(2, 1fr); align-content: center; gap: 14px; padding: 30px; background: #f6f5f1; }
.qr-card { overflow: hidden; background: #fff; border-radius: 15px; }
.qr-card img { width: 100%; }
.data-note { padding: 10px 13px; color: var(--muted); background: #f5f8fa; border-left: 3px solid var(--aqua); border-radius: 0 9px 9px 0; font-size: 12px; }
.anime-atlas { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.atlas-card { min-height: 138px; padding: 18px; background: #fff; border: 1px solid var(--line); border-radius: 16px; transition: transform .22s ease, box-shadow .22s ease; }
.atlas-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.atlas-card .atlas-meta { color: var(--aqua-deep); font-size: 12px; font-weight: 800; }
.atlas-card h3 { margin: 9px 0 7px; font-size: 16px; line-height: 1.35; }
.atlas-card p { margin: 0; color: var(--muted); font-size: 12px; }
.share-panel { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 20px; color: #fff; background: var(--ink-2); border-radius: 17px; }
.share-panel strong { margin-right: auto; }
.share-btn { padding: 8px 12px; border: 1px solid rgba(255,255,255,.25); border-radius: 9px; color: #fff; background: transparent; font-size: 13px; font-weight: 800; }
.share-btn:hover { background: rgba(255,255,255,.12); }
.site-footer { color: rgba(255,255,255,.72); background: #0d1530; }
.footer-main { display: grid; grid-template-columns: 1.25fr .8fr .8fr; gap: 34px; padding: 55px 0 36px; }
.footer-brand img { width: 168px; }
.footer-brand p { max-width: 365px; margin: 17px 0 0; font-size: 13px; }
.footer-heading { margin: 0 0 13px; color: #fff; font-size: 15px; }
.footer-links { display: grid; gap: 8px; }
.footer-links a, .footer-links span { color: rgba(255,255,255,.67); font-size: 13px; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between; padding: 18px 0; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.55); font-size: 12px; }
.footer-bottom p { margin: 0; }
.toast { position: fixed; z-index: 200; right: 18px; bottom: 18px; max-width: 330px; padding: 13px 15px; color: #fff; background: var(--ink); border-radius: 12px; box-shadow: var(--shadow); transform: translateY(20px); opacity: 0; pointer-events: none; transition: transform .24s ease, opacity .24s ease; font-size: 13px; }
.toast.show { transform: translateY(0); opacity: 1; }
.page-hero { padding: 66px 0 72px; background: linear-gradient(125deg, var(--ink) 0%, #253765 56%, #176f7c 100%); color: #fff; }
.page-hero h1 { max-width: 870px; margin: 14px 0 0; color: #fff; font-size: clamp(37px, 5vw, 60px); line-height: 1.15; }
.page-hero p { max-width: 740px; margin: 16px 0 0; color: rgba(255,255,255,.78); font-size: 17px; }
.article-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 30px; }
.article-copy { padding: 32px; background: #fff; border-radius: 19px; box-shadow: var(--shadow-sm); }
.article-copy h2 { margin: 30px 0 12px; color: var(--ink); font-size: 26px; }
.article-copy h3 { margin: 24px 0 10px; color: var(--ink); font-size: 19px; }
.article-copy p { color: var(--ink-2); }
.article-copy ul { padding-left: 22px; color: var(--ink-2); }
.article-aside { align-self: start; padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 17px; }
.article-aside h2 { margin: 0 0 12px; font-size: 19px; }
.article-aside a { display: block; padding: 8px 0; color: var(--coral-deep); border-bottom: 1px solid var(--line); font-size: 14px; }
.notice { padding: 16px 18px; color: var(--ink-2); background: #fff4d7; border-radius: 12px; font-size: 14px; }
@media (max-width: 1000px) {
  .main-nav { gap: 0; }
  .main-nav a { padding: 8px 7px; font-size: 13px; }
  .feature-grid, .video-grid { grid-template-columns: repeat(3, 1fr); }
  .ai-grid, .community-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: repeat(3, 1fr); }
  .how-grid { grid-template-columns: repeat(2, 1fr); }
  .anime-atlas { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 760px) {
  .container { width: min(var(--max), calc(100% - 28px)); }
  .header-top { min-height: 67px; }
  .brand-logo, .brand-logo img { width: 137px; height: auto; }
  .menu-toggle { display: block; }
  .main-nav { position: fixed; z-index: 49; inset: 67px 0 auto; display: grid; gap: 5px; padding: 16px 14px 20px; background: #fffdf9; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); transform: translateY(-120%); opacity: 0; pointer-events: none; transition: transform .25s ease, opacity .25s ease; }
  .main-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav a { padding: 11px 12px; font-size: 14px; }
  .search-row { display: block; padding: 9px 0; }
  .search-tip { display: none; }
  .search-feedback { margin: 6px 0 0; }
  .hero { min-height: 640px; }
  .hero-media { background-position: 63% center; }
  .hero-media::after { background: linear-gradient(90deg, rgba(255,250,244,.97), rgba(255,250,244,.86) 66%, rgba(255,250,244,.18)); }
  .hero-inner { width: min(var(--max), calc(100% - 28px)); padding: 58px 0 47px; }
  .hero h1 { font-size: 42px; }
  .hero .lead { font-size: 16px; }
  .section { padding: 62px 0; }
  .section--tight { padding: 50px 0; }
  .feature-grid, .video-grid, .expert-grid, .faq-list { grid-template-columns: 1fr; }
  .topic-layout, .split-band, .contact-panel, .article-grid { grid-template-columns: 1fr; }
  .image-frame { min-height: 320px; }
  .split-copy, .contact-copy { padding: 30px 24px; }
  .split-image { min-height: 270px; }
  .ai-grid, .community-grid, .review-grid, .how-grid, .anime-atlas { grid-template-columns: repeat(2, 1fr); }
  .expert-card { padding: 22px; }
  .qr-panel { padding: 23px; }
  .footer-main { grid-template-columns: 1fr; gap: 27px; padding: 42px 0 30px; }
  .footer-bottom { display: block; }
  .footer-bottom p + p { margin-top: 5px; }
}
@media (max-width: 430px) {
  .hero h1 { font-size: 36px; }
  .hero-stats { gap: 7px; }
  .stat-pill { min-width: calc(50% - 7px); }
  .ai-grid, .community-grid, .review-grid, .how-grid, .anime-atlas { grid-template-columns: 1fr; }
  .topic-row { grid-template-columns: 38px 1fr; }
  .topic-row .mini-tag { grid-column: 2; }
  .share-panel strong { flex-basis: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

.image-frame--article { min-height: 330px; }

/* 91视频 · extended original tutorial library */
.guide-grid, .workflow-grid, .checklist-grid, .record-grid, .calendar-grid, .reading-grid, .answer-grid, .next-grid { display: grid; gap: 16px; }
.guide-grid { grid-template-columns: repeat(3, 1fr); }
.lesson-card { display: flex; flex-direction: column; padding: 23px; background: #fff; border: 1px solid var(--line); border-radius: 19px; box-shadow: var(--shadow-sm); }
.lesson-no, .workflow-step, .calendar-day { display: inline-block; margin: 0 0 10px; color: var(--coral-deep); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.lesson-card h3, .workflow-card h3, .checklist-card h3, .record-card h3, .calendar-card h3, .reading-card h3, .answer-card h3, .next-card h3 { margin: 0 0 12px; color: var(--ink); font-size: 18px; line-height: 1.45; }
.lesson-block { padding: 11px 12px; margin-bottom: 10px; background: #f8fafc; border-radius: 11px; }
.lesson-block strong, .lesson-caution strong { display: block; color: var(--ink); font-size: 13px; }
.lesson-block p, .lesson-caution p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.detail-list { margin: 4px 0 13px; padding-left: 21px; color: var(--ink-2); font-size: 13px; }
.detail-list li { margin: 8px 0; }
.lesson-caution { margin-top: auto; padding: 12px; background: #fff4d7; border-left: 3px solid var(--sun); border-radius: 0 10px 10px 0; }
.workflow-grid { grid-template-columns: repeat(4, 1fr); }
.workflow-card { padding: 22px; color: #fff; background: linear-gradient(145deg, #293761, #151f41); border-radius: 17px; }
.workflow-card:nth-child(2n) { background: linear-gradient(145deg, #176e79, #173047); }
.workflow-card:nth-child(3n) { background: linear-gradient(145deg, #a85a50, #3d2544); }
.workflow-card h3 { color: #fff; }
.workflow-card p { margin: 0; color: rgba(255,255,255,.75); font-size: 13px; }
.workflow-step { color: var(--sun); }
.checklist-grid { grid-template-columns: repeat(4, 1fr); }
.checklist-card, .record-card, .calendar-card, .reading-card, .answer-card, .next-card { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 17px; }
.check-list { padding: 0; margin: 0; list-style: none; }
.check-list li { display: flex; gap: 8px; padding: 9px 0; color: var(--ink-2); border-bottom: 1px dashed var(--line); font-size: 13px; }
.check-list li:last-child { border-bottom: 0; }
.check-list span { color: var(--aqua-deep); font-weight: 900; }
.record-grid { grid-template-columns: repeat(3, 1fr); }
.record-card p, .calendar-card p, .reading-card p, .answer-card p, .next-card p { margin: 0; color: var(--muted); font-size: 14px; }
.record-note { margin: 15px 0; padding: 10px 12px; color: var(--ink-2); background: #f3f7f9; border-radius: 10px; font-size: 12px; }
.record-card .text-link { margin-top: auto; }
.calendar-grid { grid-template-columns: repeat(3, 1fr); }
.calendar-card { min-height: 190px; }
.reading-grid, .answer-grid, .next-grid { grid-template-columns: repeat(3, 1fr); }
.reading-card, .next-card { background: #fffdf9; }
.reading-card .text-link { display: inline-flex; margin-top: 16px; }
.answer-card { min-height: 180px; }
.next-card { color: #fff; background: var(--ink-2); border-color: transparent; }
.next-card h3 { color: #fff; }
.next-card p { color: rgba(255,255,255,.76); }
@media (max-width: 1000px) { .guide-grid { grid-template-columns: repeat(2, 1fr); } .workflow-grid, .checklist-grid { grid-template-columns: repeat(2, 1fr); } .record-grid, .calendar-grid, .reading-grid, .answer-grid, .next-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 760px) { .guide-grid, .workflow-grid, .checklist-grid, .record-grid, .calendar-grid, .reading-grid, .answer-grid, .next-grid { grid-template-columns: 1fr; } .lesson-card, .workflow-card, .checklist-card, .record-card, .calendar-card, .reading-card, .answer-card, .next-card { padding: 20px; } }