:root {
  --studio-ink: #0a1630;
  --studio-text: #253654;
  --studio-muted: #61718d;
  --studio-line: #dce5f3;
  --studio-soft: #f4f7fc;
  --studio-blue: #1768e8;
  --studio-cyan: #13b8e7;
  --studio-violet: #7757f8;
  --studio-navy: #071126;
  --studio-panel: #0c1933;
  --studio-white: #fff;
  --studio-shadow: 0 28px 80px rgba(11, 42, 92, .16);
}

html { scroll-behavior: smooth; }
body.studio-v3 { color: var(--studio-text); background: #fff; }
body.studio-v3 *, body.studio-v3 *::before, body.studio-v3 *::after { box-sizing: border-box; }
body.studio-v3 main { overflow: hidden; }
body.studio-v3 a:focus-visible,
body.studio-v3 button:focus-visible,
body.studio-v3 summary:focus-visible { outline: 3px solid rgba(23, 104, 232, .35); outline-offset: 4px; }

.studio-v3 .v2-nav { border-bottom: 1px solid rgba(21, 64, 126, .1); background: rgba(255, 255, 255, .92); backdrop-filter: blur(18px); }
.studio-v3 .v2-links { gap: 26px; }
.studio-v3 .v2-links a { font-size: .9rem; font-weight: 700; color: #41516d; }
.studio-v3 .v2-links a:hover { color: var(--studio-blue); }
.studio-v3 .v2-dl { background: var(--studio-ink); border-color: var(--studio-ink); color: white; }
.studio-v3 .v2-brand small { letter-spacing: .13em; }

.studio-shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.studio-section { padding: 104px 0; }
.studio-section.compact { padding: 76px 0; }
.section-kicker { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 16px; color: var(--studio-blue); font-size: .78rem; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
.section-kicker::before { content: ""; width: 22px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--studio-blue), var(--studio-cyan)); }
.section-title-v3 { margin: 0; max-width: 820px; color: var(--studio-ink); font-size: clamp(2rem, 4vw, 3.55rem); line-height: 1.08; letter-spacing: -.045em; }
.section-lead-v3 { max-width: 760px; margin: 20px 0 0; color: var(--studio-muted); font-size: 1.06rem; line-height: 1.85; }

.studio-hero { position: relative; padding: 82px 0 0; background: radial-gradient(circle at 82% 12%, rgba(19,184,231,.19), transparent 29%), radial-gradient(circle at 12% 15%, rgba(119,87,248,.18), transparent 31%), linear-gradient(180deg, #f5f9ff 0%, #fff 76%); }
.studio-hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .34; background-image: linear-gradient(rgba(34,97,185,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(34,97,185,.06) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to bottom, #000, transparent 74%); }
.studio-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: 58px; align-items: center; }
.studio-hero-copy { padding-bottom: 34px; }
.studio-badge { display: inline-flex; align-items: center; gap: 9px; padding: 8px 12px; border: 1px solid rgba(23,104,232,.18); border-radius: 999px; background: rgba(255,255,255,.76); color: var(--studio-blue); font-size: .8rem; font-weight: 900; letter-spacing: .08em; box-shadow: 0 10px 34px rgba(41,99,190,.08); }
.studio-badge i { width: 8px; height: 8px; border-radius: 50%; background: #19c985; box-shadow: 0 0 0 5px rgba(25,201,133,.13); }
.studio-hero h1 { margin: 25px 0 24px; color: var(--studio-ink); font-size: clamp(2.75rem, 5.4vw, 5.3rem); line-height: .99; letter-spacing: -.065em; }
.studio-hero h1 .gradient-word { display: inline-block; color: transparent; background: linear-gradient(100deg, var(--studio-blue) 0%, var(--studio-cyan) 47%, var(--studio-violet) 100%); background-clip: text; -webkit-background-clip: text; }
.studio-hero .hero-lead-v3 { margin: 0; max-width: 690px; color: #42536f; font-size: 1.12rem; line-height: 1.82; }
.studio-hero .hero-lead-v3 strong { color: var(--studio-ink); }
.studio-pills { display: flex; flex-wrap: wrap; gap: 9px; margin: 24px 0 28px; padding: 0; list-style: none; }
.studio-pills li { padding: 8px 11px; border: 1px solid #d9e5f5; border-radius: 10px; background: rgba(255,255,255,.82); color: #3b4d69; font-size: .84rem; font-weight: 750; }
.studio-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.studio-btn { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 8px; padding: 0 21px; border: 1px solid #cad8ec; border-radius: 13px; background: white; color: var(--studio-ink); font-weight: 850; text-decoration: none; transition: .2s ease; }
.studio-btn:hover { transform: translateY(-2px); border-color: #9eb8df; box-shadow: 0 12px 30px rgba(34,77,142,.12); }
.studio-btn.primary { border-color: var(--studio-blue); background: linear-gradient(135deg, var(--studio-blue), #356fef); color: white; box-shadow: 0 14px 32px rgba(23,104,232,.24); }
.studio-note { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 20px; color: #6e7e97; font-size: .82rem; font-weight: 650; }
.studio-note span::before { content: "✓"; margin-right: 6px; color: #13a873; font-weight: 900; }

.hero-product-shot { position: relative; align-self: end; margin-bottom: -46px; }
.hero-product-shot::before { content: ""; position: absolute; inset: 13% 8% -4%; border-radius: 36px; background: linear-gradient(135deg, rgba(23,104,232,.24), rgba(19,184,231,.16)); filter: blur(34px); }
.hero-product-shot img { position: relative; display: block; width: 801.3px; border: 1px solid rgba(134,166,211,.5); border-radius: 18px; background: #eaf1fb; box-shadow: 0 32px 90px rgba(14,44,91,.25);
    height: 541px;
}
.shot-float { position: absolute; z-index: 2; display: grid; gap: 2px; padding: 13px 15px; border: 1px solid rgba(255,255,255,.7); border-radius: 14px; background: rgba(7,17,38,.9); color: white; box-shadow: 0 16px 36px rgba(0,0,0,.2); backdrop-filter: blur(12px); }
.shot-float strong { font-size: .9rem; }
.shot-float small { color: #91bdfd; font-size: .72rem; }
.shot-float.one { left: -22px; bottom: 17%; }
.shot-float.two { right: -14px; top: 14%; }

.seo-keywords { padding: 76px 0 30px; }
.keyword-line { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.keyword-line span { padding: 9px 13px; border: 1px solid #e0e8f4; border-radius: 999px; color: #51617b; background: #fbfdff; font-size: .83rem; font-weight: 700; }

.ai-stage { color: white; background: radial-gradient(circle at 0 0, rgba(42,112,240,.3), transparent 34%), radial-gradient(circle at 100% 20%, rgba(113,78,247,.23), transparent 32%), var(--studio-navy); }
.ai-stage .section-kicker { color: #73cfff; }
.ai-stage .section-title-v3 { color: white; }
.ai-stage .section-lead-v3 { color: #aebbd1; }
.ai-intro-grid { display: grid; grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr); gap: 54px; align-items: center; }
.ai-shot { position: relative; padding: 18px; border: 1px solid rgba(129,178,255,.18); border-radius: 24px; background: linear-gradient(145deg, rgba(255,255,255,.08), rgba(255,255,255,.025)); box-shadow: 0 30px 70px rgba(0,0,0,.26); }
.ai-shot img { display: block; width: 100%; max-height: 690px; object-fit: contain; border-radius: 13px; background: white; }
.ai-shot figcaption { margin-top: 13px; color: #91a4c2; font-size: .82rem; line-height: 1.6; }
.ai-sources { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 28px 0; }
.ai-source { padding: 16px; border: 1px solid rgba(134,182,255,.17); border-radius: 14px; background: rgba(255,255,255,.045); }
.ai-source b { display: block; margin-bottom: 6px; color: white; }
.ai-source span { color: #96a9c6; font-size: .84rem; line-height: 1.55; }
.workflow-v3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 48px; }
.workflow-card { position: relative; padding: 28px; border: 1px solid rgba(122,170,244,.16); border-radius: 20px; background: rgba(255,255,255,.045); }
.workflow-card .step { display: inline-flex; min-width: 42px; height: 30px; align-items: center; justify-content: center; border-radius: 999px; background: linear-gradient(135deg, #237bf2, #7659f6); color: white; font-size: .8rem; font-weight: 900; }
.workflow-card h3 { margin: 18px 0 10px; color: white; font-size: 1.2rem; }
.workflow-card p { margin: 0; color: #9eacc1; font-size: .94rem; line-height: 1.75; }
.workflow-card ul { margin: 16px 0 0; padding: 0; list-style: none; }
.workflow-card li { margin-top: 8px; color: #c6d1e1; font-size: .86rem; }
.workflow-card li::before { content: "·"; margin-right: 7px; color: #48cdf4; font-weight: 900; }

.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 44px; }
.advantage-card { min-height: 210px; padding: 27px; border: 1px solid var(--studio-line); border-radius: 19px; background: linear-gradient(180deg, #fff, #f8fbff); }
.advantage-card .icon { display: inline-grid; width: 42px; height: 42px; place-items: center; border-radius: 12px; background: #eaf3ff; color: var(--studio-blue); font-weight: 950; }
.advantage-card h3 { margin: 18px 0 9px; color: var(--studio-ink); font-size: 1.08rem; }
.advantage-card p { margin: 0; color: var(--studio-muted); font-size: .92rem; line-height: 1.72; }

.studio-gallery { background: var(--studio-soft); }
.gallery-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 18px; margin-top: 42px; }
.gallery-stack { display: grid; gap: 18px; }
.product-frame { overflow: hidden; border: 1px solid #d7e1ef; border-radius: 20px; background: white; box-shadow: 0 20px 48px rgba(16,52,105,.11); }
.product-frame img { display: block; width: 100%; height: 100%; min-height: 240px; object-fit: cover; object-position: top left; }
.product-frame figcaption { padding: 14px 17px; border-top: 1px solid #e3eaf4; color: #52637e; font-size: .85rem; line-height: 1.55; }
.product-frame.tall img { aspect-ratio: 1.22 / 1; }
.product-frame.small img { aspect-ratio: 1.55 / 1; }

.feature-atlas { background: white; }
.feature-groups { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 44px; }
.feature-groups .feature-group:nth-child(10) { order: 1; }
.feature-groups .feature-group:nth-child(3) { order: 2; }
.feature-groups .feature-group:nth-child(7) { order: 3; }
.feature-groups .feature-group:nth-child(8) { order: 4; }
.feature-groups .feature-group:nth-child(1) { order: 5; }
.feature-groups .feature-group:nth-child(5) { order: 6; }
.feature-groups .feature-group:nth-child(6) { order: 7; }
.feature-groups .feature-group:nth-child(2) { order: 8; }
.feature-groups .feature-group:nth-child(4) { order: 9; }
.feature-groups .feature-group:nth-child(9) { order: 10; }
.feature-groups .feature-group .group-no { font-size: 0; }
.feature-groups .feature-group:nth-child(10) .group-no::after { content: "01 · AI 视频生成 / 镜头卡"; }
.feature-groups .feature-group:nth-child(3) .group-no::after { content: "02 · AI 配音 / 音频与字幕"; }
.feature-groups .feature-group:nth-child(7) .group-no::after { content: "03 · AI 修图 / 换装与移除"; }
.feature-groups .feature-group:nth-child(8) .group-no::after { content: "04 · 参考图合成 / 图片与设计"; }
.feature-groups .feature-group:nth-child(1) .group-no::after { content: "05 · AI 自动剪辑"; }
.feature-groups .feature-group:nth-child(5) .group-no::after { content: "06 · 多轨剪辑"; }
.feature-groups .feature-group:nth-child(6) .group-no::after { content: "07 · 字效与动态特效"; }
.feature-groups .feature-group:nth-child(2) .group-no::after { content: "08 · 专业录屏"; }
.feature-groups .feature-group:nth-child(4) .group-no::after { content: "09 · 教学与演示"; }
.feature-groups .feature-group:nth-child(9) .group-no::after { content: "10 · 管理与工具箱"; }
.feature-groups .feature-group .group-no::after { font-size: .72rem; }
.feature-group { padding: 28px; border: 1px solid var(--studio-line); border-radius: 20px; background: #fff; box-shadow: 0 12px 40px rgba(20,55,105,.055); }
.feature-group .group-no { color: var(--studio-blue); font-size: .72rem; font-weight: 950; letter-spacing: .14em; }
.feature-group h3 { margin: 12px 0 15px; color: var(--studio-ink); font-size: 1.2rem; }
.feature-group ul { display: grid; gap: 9px; margin: 0; padding: 0; list-style: none; }
.feature-group li { position: relative; padding-left: 17px; color: #52627c; font-size: .9rem; line-height: 1.58; }
.feature-group li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; border-radius: 2px; background: linear-gradient(135deg, var(--studio-blue), var(--studio-cyan)); }

.scenes-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; margin-top: 40px; }
.scene-pill { padding: 18px 12px; border: 1px solid #dbe5f2; border-radius: 16px; background: #fbfdff; text-align: center; }
.scene-pill b { display: block; color: var(--studio-ink); font-size: .92rem; }
.scene-pill span { display: block; margin-top: 5px; color: #7b8aa0; font-size: .76rem; }

.dual-products { padding: 92px 0; background: #f5f8fd; }
.dual-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; margin-top: 40px; }
.dual-card { position: relative; overflow: hidden; min-height: 300px; padding: 36px; border: 1px solid #dce5f2; border-radius: 24px; background: white; }
.dual-card.studio { color: white; border-color: transparent; background: radial-gradient(circle at 90% 0, rgba(26,207,242,.25), transparent 32%), linear-gradient(135deg, #0b1c3b, #102f66); }
.dual-card .product-code { font-size: .72rem; font-weight: 950; letter-spacing: .16em; opacity: .72; }
.dual-card h2 { margin: 17px 0 12px; color: inherit; font-size: clamp(1.8rem, 3vw, 2.65rem); letter-spacing: -.04em; }
.dual-card p { max-width: 600px; margin: 0; color: inherit; opacity: .76; font-size: 1rem; line-height: 1.78; }
.dual-card .mini-points-v3 { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.dual-card .mini-points-v3 span { padding: 7px 9px; border: 1px solid currentColor; border-radius: 9px; font-size: .78rem; font-weight: 700; opacity: .74; }
.dual-card .inline-link { display: inline-flex; margin-top: 25px; color: inherit; font-weight: 900; text-decoration: none; }

.guide-hero { padding: 82px 0 70px; background: linear-gradient(180deg, #f2f7ff, white); }
.guide-layout { display: grid; grid-template-columns: minmax(0, .76fr) minmax(320px, .24fr); gap: 46px; align-items: start; }
.guide-main h1 { margin: 0; color: var(--studio-ink); font-size: clamp(2.45rem, 5vw, 4.6rem); line-height: 1.03; letter-spacing: -.055em; }
.guide-main > p { color: var(--studio-muted); font-size: 1.08rem; line-height: 1.85; }
.guide-aside { position: sticky; top: 94px; padding: 22px; border: 1px solid #dbe5f2; border-radius: 18px; background: white; }
.guide-aside b { display: block; margin-bottom: 12px; color: var(--studio-ink); }
.guide-aside a { display: block; padding: 8px 0; color: #536681; font-size: .88rem; text-decoration: none; }
.guide-block { padding: 74px 0; border-top: 1px solid #e6ecf4; }
.guide-block h2 { color: var(--studio-ink); font-size: clamp(1.8rem, 3vw, 2.7rem); letter-spacing: -.04em; }
.guide-block h3 { margin-top: 30px; color: var(--studio-ink); }
.guide-block p, .guide-block li { color: #52627b; font-size: 1rem; line-height: 1.85; }
.guide-block .callout { padding: 24px; border-left: 4px solid var(--studio-blue); border-radius: 0 16px 16px 0; background: #edf5ff; }
.guide-block .decision-table { overflow-x: auto; margin-top: 28px; }
.decision-table table { width: 100%; border-collapse: collapse; background: white; }
.decision-table th, .decision-table td { padding: 16px; border: 1px solid #dfe7f2; text-align: left; vertical-align: top; }
.decision-table th { color: var(--studio-ink); background: #f4f8fd; }

.studio-cta { color: white; background: linear-gradient(135deg, #0a1730, #133e7f); }
.cta-box-v3 { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.cta-box-v3 h2 { margin: 0; max-width: 760px; color: white; font-size: clamp(2rem, 4vw, 3.4rem); letter-spacing: -.04em; }
.cta-box-v3 p { margin: 12px 0 0; color: #aebed7; }
.cta-box-v3 .studio-btn { flex: 0 0 auto; }

.studio-v3 .v2-footer { background: #050d1d; }
.studio-v3 .v2-footer, .studio-v3 .v2-footer a { color: #a8b8d0; }

@media (max-width: 1040px) {
  .studio-hero-grid, .ai-intro-grid, .dual-grid { grid-template-columns: 1fr; }
  .studio-hero-copy { max-width: 820px; }
  .hero-product-shot { width: 92%; margin: 6px auto -42px; }
  .ai-shot { max-width: 620px; }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-groups { grid-template-columns: repeat(2, 1fr); }
  .scenes-row { grid-template-columns: repeat(3, 1fr); }
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-stack { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 780px) {
  .studio-shell { width: min(100% - 28px, 1180px); }
  .studio-section { padding: 76px 0; }
  .studio-v3 .v2-links { display: none; }
  .studio-v3 .v2-nav .inner { padding-inline: 14px; }
  .studio-hero { padding-top: 56px; }
  .studio-hero h1 { font-size: clamp(2.55rem, 13vw, 4.2rem); }
  .hero-product-shot { width: 100%; margin-bottom: -24px; }
  .shot-float { display: none; }
  .seo-keywords { padding-top: 50px; }
  .workflow-v3, .ai-sources, .advantage-grid, .feature-groups { grid-template-columns: 1fr; }
  .gallery-stack { grid-template-columns: 1fr; }
  .scenes-row { grid-template-columns: repeat(2, 1fr); }
  .cta-box-v3 { align-items: flex-start; flex-direction: column; }
  .guide-layout { grid-template-columns: 1fr; }
  .guide-aside { position: static; }
}

@media (max-width: 480px) {
  .studio-actions, .studio-actions .studio-btn { width: 100%; }
  .studio-v3 .v2-dl { padding-inline: 13px; }
  .studio-note { display: grid; }
  .scenes-row { grid-template-columns: 1fr; }
  .dual-card, .workflow-card, .feature-group { padding: 23px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .studio-btn { transition: none; }
}