*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#faf9f6;--bg-alt:#f3f0eb;--surface:#fff;--text:#1c1917;--text-light:#78716c;--text-muted:#a8a29e;
  --primary:#c026d3;--primary-dark:#a21caf;--primary-light:#f0abfc;--primary-bg:#fdf4ff;
  --secondary:#f59e0b;--secondary-dark:#d97706;--secondary-light:#fde68a;--secondary-bg:#fffbeb;
  --hero-from:#1e0533;--hero-mid:#4c1d95;--hero-to:#312e81;
  --violet:#8b5cf6;--rose:#f43f5e;--emerald:#10b981;--sky:#0ea5e9;--slate:#475569;
  --radius:12px;--radius-lg:20px;--radius-pill:999px;
  --shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
  --shadow-md:0 4px 12px rgba(0,0,0,.08);--shadow-lg:0 12px 32px rgba(0,0,0,.12);
  --shadow-fuchsia:0 4px 20px rgba(192,38,211,.18);
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:none;background:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes pulse{0%,100%{opacity:.6}50%{opacity:1}}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:var(--radius-pill);transition:all .25s;cursor:pointer;white-space:nowrap;padding:12px 28px;font-size:15px;line-height:1.4}
.btn:disabled{opacity:.6;cursor:not-allowed}
.btn-fuchsia{background:var(--primary);color:#fff}
.btn-fuchsia:hover{background:var(--primary-dark);box-shadow:var(--shadow-fuchsia)}
.btn-amber{background:var(--secondary);color:#fff}
.btn-amber:hover{background:var(--secondary-dark)}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-outline-light{border:2px solid rgba(255,255,255,.4);color:#fff;background:transparent}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.7)}
.btn-white{background:#fff;color:var(--primary)}
.btn-white:hover{background:#f3f0eb}
.btn-ghost{background:transparent;color:var(--primary)}
.btn-ghost:hover{background:var(--primary-bg)}
.btn-lg{padding:16px 36px;font-size:17px}
.btn-sm{padding:8px 20px;font-size:13px}

/* ===== NAVIGATION ===== */
.site-nav{position:sticky;top:0;z-index:100;background:rgba(250,249,246,.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(0,0,0,.06)}
.nav-container{display:flex;align-items:center;justify-content:space-between;max-width:1180px;margin:0 auto;padding:0 24px;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--text)}
.nav-logo svg{width:32px;height:32px}
.nav-items{display:flex;align-items:center;gap:4px;list-style:none}
.nav-item{padding:8px 18px;border-radius:var(--radius-pill);font-size:14px;font-weight:500;color:var(--text-light);transition:all .2s}
.nav-item:hover{color:var(--text);background:rgba(0,0,0,.04)}
.nav-item.current{color:var(--primary);background:var(--primary-bg);font-weight:600}
.nav-download{margin-left:8px}

/* ===== HERO (index) ===== */
.hero-section{background:linear-gradient(135deg,var(--hero-from) 0%,var(--hero-mid) 50%,var(--hero-to) 100%);color:#fff;padding:80px 0 100px;position:relative;overflow:hidden}
.hero-section::before{content:"";position:absolute;width:500px;height:500px;background:radial-gradient(circle,rgba(192,38,211,.25),transparent 70%);top:-100px;right:-100px;border-radius:50%}
.hero-section::after{content:"";position:absolute;width:400px;height:400px;background:radial-gradient(circle,rgba(245,158,11,.15),transparent 70%);bottom:-80px;left:-80px;border-radius:50%}
.hero-container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero-content{animation:fadeUp .8s ease}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius-pill);padding:6px 16px;font-size:13px;margin-bottom:20px}
.hero-eyebrow-dot{width:8px;height:8px;border-radius:50%;background:var(--secondary);animation:pulse 2s infinite}
.hero-headline{font-size:clamp(32px,4.5vw,52px);font-weight:800;line-height:1.15;margin-bottom:20px;letter-spacing:-.02em}
.hero-headline .accent{color:var(--primary-light)}
.hero-headline .accent2{color:var(--secondary-light)}
.hero-subtext{font-size:17px;color:rgba(255,255,255,.75);max-width:480px;margin-bottom:32px;line-height:1.7}
.hero-buttons{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px}
.hero-trust{display:flex;gap:24px;flex-wrap:wrap}
.hero-trust-item{display:flex;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,.6)}
.hero-trust-item svg{width:16px;height:16px;opacity:.6}
.hero-mockup{animation:float 6s ease-in-out infinite}
.mockup-window{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);overflow:hidden;backdrop-filter:blur(8px)}
.mockup-titlebar{display:flex;align-items:center;gap:6px;padding:12px 16px;background:rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.08)}
.mockup-dots{display:flex;gap:6px}
.mockup-dot{width:10px;height:10px;border-radius:50%}
.mockup-dot.r{background:#f43f5e}.mockup-dot.y{background:#f59e0b}.mockup-dot.g{background:#10b981}
.mockup-title{margin-left:12px;font-size:12px;color:rgba(255,255,255,.5)}
.mockup-content{padding:24px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mockup-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:16px;text-align:center}
.mockup-card-icon{width:36px;height:36px;border-radius:8px;margin:0 auto 8px;display:flex;align-items:center;justify-content:center}
.mc-writer{background:rgba(96,165,250,.2)}.mc-sheet{background:rgba(74,222,128,.2)}.mc-slide{background:rgba(251,146,60,.2)}.mc-pdf{background:rgba(248,113,113,.2)}
.mockup-card-icon svg{width:20px;height:20px}
.mockup-card-label{font-size:11px;color:rgba(255,255,255,.6)}

/* ===== TRUST STRIP ===== */
.trust-strip{background:var(--surface);border-bottom:1px solid rgba(0,0,0,.05);padding:20px 0}
.trust-row{display:flex;align-items:center;justify-content:center;gap:40px;flex-wrap:wrap}
.trust-badge{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:var(--text-light)}
.trust-badge svg{width:20px;height:20px;color:var(--primary)}

/* ===== SECTIONS ===== */
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:linear-gradient(135deg,var(--hero-from),var(--hero-to));color:#fff}
.section-primary{background:var(--primary-bg)}
.sec-head{text-align:center;max-width:640px;margin:0 auto 48px}
.sec-pill{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}
.sec-pill-fuchsia{background:var(--primary-bg);color:var(--primary)}
.sec-pill-amber{background:var(--secondary-bg);color:var(--secondary-dark)}
.sec-pill-violet{background:#f5f3ff;color:var(--violet)}
.sec-pill-emerald{background:#ecfdf5;color:var(--emerald)}
.sec-pill-white{background:rgba(255,255,255,.12);color:rgba(255,255,255,.9)}
.sec-title{font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.2;margin-bottom:12px;letter-spacing:-.02em}
.sec-title-light{color:#fff}
.sec-sub{font-size:16px;color:var(--text-light);line-height:1.7}
.sec-sub-light{color:rgba(255,255,255,.65)}

/* ===== SUITE CARDS ===== */
.suite-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.suite-card{background:var(--surface);border-radius:var(--radius-lg);padding:32px 24px;border:1px solid rgba(0,0,0,.06);transition:all .3s;position:relative;overflow:hidden}
.suite-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;border-radius:4px 4px 0 0;transition:height .3s}
.suite-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.suite-card:hover::before{height:6px}
.sc-writer::before{background:linear-gradient(90deg,#60a5fa,#3b82f6)}
.sc-sheet::before{background:linear-gradient(90deg,#4ade80,#22c55e)}
.sc-slide::before{background:linear-gradient(90deg,#fb923c,#f97316)}
.sc-pdf::before{background:linear-gradient(90deg,#f87171,#ef4444)}
.suite-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.si-blue{background:rgba(59,130,246,.1);color:#3b82f6}
.si-green{background:rgba(34,197,94,.1);color:#22c55e}
.si-orange{background:rgba(249,115,22,.1);color:#f97316}
.si-red{background:rgba(239,68,68,.1);color:#ef4444}
.suite-icon svg{width:28px;height:28px}
.suite-name{font-size:18px;font-weight:700;margin-bottom:8px}
.suite-desc{font-size:14px;color:var(--text-light);margin-bottom:16px;line-height:1.6}
.suite-features{list-style:none}
.suite-features li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-light);padding:4px 0}
.suite-features li svg{width:14px;height:14px;color:var(--emerald);flex-shrink:0}

/* ===== ADVANTAGE ROWS ===== */
.advantage-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding:48px 0}
.advantage-row:not(:last-child){border-bottom:1px solid rgba(0,0,0,.06)}
.advantage-row.rev .advantage-text{order:2}
.advantage-row.rev .advantage-visual{order:1}
.advantage-badge{display:inline-block;padding:4px 12px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;margin-bottom:12px}
.ab-fuchsia{background:var(--primary-bg);color:var(--primary)}
.ab-amber{background:var(--secondary-bg);color:var(--secondary-dark)}
.ab-violet{background:#f5f3ff;color:var(--violet)}
.ab-emerald{background:#ecfdf5;color:var(--emerald)}
.advantage-title{font-size:24px;font-weight:700;margin-bottom:12px}
.advantage-desc{font-size:15px;color:var(--text-light);margin-bottom:20px;line-height:1.7}
.advantage-points{list-style:none}
.advantage-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-light);padding:6px 0}
.advantage-points li svg{width:18px;height:18px;color:var(--primary);flex-shrink:0;margin-top:2px}
.advantage-visual{display:flex;justify-content:center}
.advantage-panel{background:var(--surface);border:1px solid rgba(0,0,0,.06);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-md);width:100%;max-width:420px}
.ap-header{display:flex;align-items:center;gap:10px;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid rgba(0,0,0,.06)}
.ap-header svg{width:20px;height:20px;color:var(--primary)}
.ap-header span{font-size:14px;font-weight:600}
.ap-bar{height:8px;border-radius:4px;background:var(--bg-alt);margin-bottom:8px;overflow:hidden}
.ap-bar-fill{height:100%;border-radius:4px}
.ap-bar-fill.f1{width:92%;background:linear-gradient(90deg,var(--primary),var(--violet))}
.ap-bar-fill.f2{width:88%;background:linear-gradient(90deg,var(--secondary),#f97316)}
.ap-bar-fill.f3{width:95%;background:linear-gradient(90deg,var(--emerald),#06b6d4)}
.ap-bar-fill.f4{width:80%;background:linear-gradient(90deg,var(--sky),#6366f1)}
.ap-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid rgba(0,0,0,.04)}
.ap-row-label{font-size:13px;color:var(--text-light)}
.ap-row-val{font-size:13px;font-weight:600;color:var(--text)}
.ap-stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.ap-stat{text-align:center;padding:12px;background:var(--bg);border-radius:10px}
.ap-stat-num{font-size:20px;font-weight:700;color:var(--primary)}
.ap-stat-lbl{font-size:11px;color:var(--text-muted)}

/* ===== PLATFORM SECTION ===== */
.platform-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.platform-card{background:var(--surface);border-radius:var(--radius-lg);padding:28px 20px;text-align:center;border:1px solid rgba(0,0,0,.06);transition:all .3s}
.platform-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.platform-card.featured{border-color:var(--primary);box-shadow:var(--shadow-fuchsia);position:relative}
.platform-card.featured::after{content:"推荐";position:absolute;top:12px;right:12px;background:var(--primary);color:#fff;font-size:11px;font-weight:600;padding:3px 10px;border-radius:var(--radius-pill)}
.platform-icon{width:48px;height:48px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:var(--bg-alt)}
.platform-icon svg{width:24px;height:24px}
.platform-name{font-size:16px;font-weight:700;margin-bottom:4px}
.platform-meta{font-size:12px;color:var(--text-muted);margin-bottom:16px}

/* ===== COUNTER BAR ===== */
.counter-section{background:linear-gradient(135deg,var(--hero-from),var(--hero-mid),var(--hero-to));padding:48px 0}
.counter-row{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;text-align:center}
.counter-item{position:relative}
.counter-item:not(:last-child)::after{content:"";position:absolute;right:0;top:20%;height:60%;width:1px;background:rgba(255,255,255,.1)}
.counter-num{font-size:clamp(28px,3vw,40px);font-weight:800;color:#fff;line-height:1.2;background:linear-gradient(135deg,var(--primary-light),var(--secondary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.counter-label{font-size:13px;color:rgba(255,255,255,.55);margin-top:4px}

/* ===== TESTIMONIALS ===== */
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.testimonial-card{background:var(--surface);border-radius:var(--radius-lg);padding:28px;border:1px solid rgba(0,0,0,.06);transition:all .3s}
.testimonial-card:hover{box-shadow:var(--shadow-md)}
.testimonial-rating{display:flex;gap:2px;margin-bottom:12px}
.testimonial-rating svg{width:16px;height:16px;color:var(--secondary)}
.testimonial-quote{font-size:14px;color:var(--text-light);line-height:1.7;margin-bottom:16px;font-style:italic}
.testimonial-footer{display:flex;align-items:center;gap:12px}
.testimonial-avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;color:#fff}
.ta-fuchsia{background:var(--primary)}.ta-amber{background:var(--secondary)}.ta-violet{background:var(--violet)}.ta-emerald{background:var(--emerald)}.ta-rose{background:var(--rose)}.ta-sky{background:var(--sky)}
.testimonial-info{font-size:13px}
.testimonial-name{font-weight:600;color:var(--text)}
.testimonial-role{color:var(--text-muted)}

/* ===== COMPARISON TABLE ===== */
.compare-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare-table{width:100%;border-collapse:collapse;min-width:640px}
.compare-table th,.compare-table td{padding:14px 16px;text-align:center;font-size:14px;border-bottom:1px solid rgba(0,0,0,.06)}
.compare-table thead th{background:var(--bg-alt);font-weight:600;position:sticky;top:0;font-size:13px;text-transform:uppercase;letter-spacing:.04em}
.compare-table tbody tr:hover{background:rgba(192,38,211,.02)}
.compare-table td:first-child{text-align:left;font-weight:500}
.compare-highlight{background:var(--primary-bg) !important;font-weight:600;color:var(--primary)}
.compare-table thead th:nth-child(2){color:var(--primary)}
.cmp-yes{color:var(--emerald);font-weight:600}
.cmp-no{color:var(--rose);font-weight:600}
.cmp-part{color:var(--secondary);font-weight:600}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-entry{border:1px solid rgba(0,0,0,.06);border-radius:var(--radius);margin-bottom:8px;overflow:hidden;background:var(--surface);transition:all .2s}
.faq-entry:hover{border-color:rgba(192,38,211,.15)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;cursor:pointer;font-weight:600;font-size:15px;gap:12px;transition:background .2s}
.faq-question:hover{background:rgba(0,0,0,.015)}
.faq-toggle{width:24px;height:24px;flex-shrink:0;transition:transform .3s;color:var(--text-muted)}
.faq-entry.open .faq-toggle{transform:rotate(180deg);color:var(--primary)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-entry.open .faq-answer{max-height:500px}
.faq-answer-inner{padding:0 24px 20px;font-size:14px;color:var(--text-light);line-height:1.8}

/* ===== CTA BANNER ===== */
.cta-section{background:linear-gradient(135deg,var(--hero-from),var(--hero-mid),var(--hero-to));padding:60px 0;text-align:center}
.cta-headline{font-size:clamp(24px,3vw,34px);font-weight:800;color:#fff;margin-bottom:12px}
.cta-text{font-size:16px;color:rgba(255,255,255,.65);margin-bottom:28px;max-width:540px;margin-left:auto;margin-right:auto}
.cta-buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ===== FOOTER ===== */
.site-footer{background:#1c1917;color:rgba(255,255,255,.5);padding:40px 0}
.footer-container{text-align:center}
.footer-brand{font-weight:700;font-size:16px;color:rgba(255,255,255,.8);margin-bottom:16px}
.footer-verify{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;border-radius:var(--radius-pill);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);margin-bottom:16px;font-size:13px;color:rgba(255,255,255,.6)}
.footer-verify svg{width:16px;height:16px;color:var(--emerald)}
.footer-disclaimer{font-size:12px;color:rgba(255,255,255,.35);max-width:640px;margin:0 auto;line-height:1.7}

/* ===== DOWNLOAD PAGE ===== */
.dl-hero-section{background:linear-gradient(135deg,var(--hero-from) 0%,var(--hero-mid) 60%,var(--hero-to) 100%);color:#fff;padding:60px 0 80px;text-align:center;position:relative;overflow:hidden}
.dl-hero-section::before{content:"";position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(192,38,211,.2),transparent 70%);top:-200px;left:50%;transform:translateX(-50%);border-radius:50%}
.dl-tag{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--radius-pill);background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);font-size:12px;font-weight:600;margin-bottom:16px}
.dl-title{font-size:clamp(28px,4vw,42px);font-weight:800;margin-bottom:12px}
.dl-subtitle{font-size:16px;color:rgba(255,255,255,.65);max-width:520px;margin:0 auto}

.dl-primary{max-width:560px;margin:-40px auto 40px;background:var(--surface);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-lg);position:relative;z-index:2;border:1px solid rgba(0,0,0,.06)}
.dl-primary-header{display:flex;align-items:center;gap:16px;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid rgba(0,0,0,.06)}
.dl-primary-icon{width:56px;height:56px;background:linear-gradient(135deg,var(--primary),var(--violet));border-radius:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.dl-primary-icon svg{width:28px;height:28px;color:#fff}
.dl-primary-name{font-size:20px;font-weight:700}
.dl-primary-version{font-size:13px;color:var(--text-muted);margin-top:2px}
.dl-primary-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:24px}
.dl-spec-item{text-align:center;padding:12px;background:var(--bg);border-radius:10px}
.dl-spec-label{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}
.dl-spec-val{font-size:14px;font-weight:600;margin-top:2px}
.dl-security-badge{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px;border-radius:10px;background:rgba(16,185,129,.06);border:1px solid rgba(16,185,129,.12);margin-top:20px;font-size:13px;color:var(--emerald)}
.dl-security-badge svg{width:16px;height:16px}

.dl-secondary{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px}
.dl-sec-card{background:var(--surface);border-radius:var(--radius-lg);padding:28px 20px;text-align:center;border:1px solid rgba(0,0,0,.06);transition:all .3s}
.dl-sec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.dl-sec-icon{width:44px;height:44px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:var(--bg)}
.dl-sec-icon svg{width:22px;height:22px}
.dl-sec-name{font-size:15px;font-weight:700;margin-bottom:4px}
.dl-sec-version{font-size:12px;color:var(--text-muted);margin-bottom:14px}

/* ===== INSTALL GUIDE ===== */
.install-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.install-col-title{font-size:18px;font-weight:700;margin-bottom:20px;display:flex;align-items:center;gap:8px}
.install-col-title svg{width:22px;height:22px}
.install-timeline{position:relative;padding-left:36px}
.install-timeline::before{content:"";position:absolute;left:12px;top:0;bottom:0;width:2px;background:rgba(0,0,0,.06)}
.install-step{position:relative;padding-bottom:24px}
.install-step:last-child{padding-bottom:0}
.step-marker{position:absolute;left:-36px;top:0;width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff}
.sm-fuchsia{background:var(--primary)}
.sm-amber{background:var(--secondary)}
.step-title{font-size:15px;font-weight:600;margin-bottom:4px}
.step-detail{font-size:13px;color:var(--text-light);line-height:1.6}

/* ===== REQUIREMENTS ===== */
.req-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.req-card{background:var(--surface);border-radius:var(--radius);padding:20px;border:1px solid rgba(0,0,0,.06);text-align:center}
.req-icon{width:40px;height:40px;margin:0 auto 10px;display:flex;align-items:center;justify-content:center;color:var(--primary)}
.req-icon svg{width:22px;height:22px}
.req-title{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:4px}
.req-value{font-size:14px;font-weight:600}

/* ===== CHANGELOG ===== */
.changelog-list{max-width:640px;margin:0 auto;position:relative;padding-left:24px}
.changelog-list::before{content:"";position:absolute;left:6px;top:0;bottom:0;width:2px;background:rgba(0,0,0,.06)}
.changelog-entry{position:relative;padding-bottom:28px}
.changelog-entry:last-child{padding-bottom:0}
.changelog-dot{position:absolute;left:-24px;top:4px;width:14px;height:14px;border-radius:50%;border:3px solid var(--bg)}
.cd-fuchsia{background:var(--primary)}.cd-amber{background:var(--secondary)}.cd-violet{background:var(--violet)}.cd-emerald{background:var(--emerald)}.cd-sky{background:var(--sky)}
.changelog-header{display:flex;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap}
.changelog-version{font-size:15px;font-weight:700}
.changelog-tag{font-size:11px;font-weight:600;padding:2px 8px;border-radius:var(--radius-pill)}
.ct-stable{background:rgba(16,185,129,.1);color:var(--emerald)}
.ct-lts{background:rgba(245,158,11,.1);color:var(--secondary-dark)}
.ct-beta{background:rgba(139,92,246,.1);color:var(--violet)}
.changelog-date{font-size:12px;color:var(--text-muted)}
.changelog-notes{font-size:13px;color:var(--text-light);line-height:1.6}

/* ===== SECURITY BANNER ===== */
.security-banner{display:flex;align-items:center;gap:16px;padding:24px;border-radius:var(--radius-lg);background:rgba(16,185,129,.04);border:1px solid rgba(16,185,129,.12);margin-top:40px}
.security-banner-icon{width:48px;height:48px;border-radius:12px;background:rgba(16,185,129,.1);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--emerald)}
.security-banner-icon svg{width:24px;height:24px}
.security-banner-title{font-size:15px;font-weight:700;margin-bottom:2px}
.security-banner-desc{font-size:13px;color:var(--text-light)}

/* ===== ARTICLE PAGE (zh-cn) ===== */
.article-hero{background:linear-gradient(135deg,var(--hero-from) 0%,var(--hero-mid) 60%,var(--hero-to) 100%);color:#fff;padding:60px 0 50px;position:relative;overflow:hidden}
.article-hero::before{content:"";position:absolute;width:400px;height:400px;background:radial-gradient(circle,rgba(245,158,11,.15),transparent 70%);bottom:-120px;right:-80px;border-radius:50%}
.article-hero-inner{position:relative;z-index:1;max-width:720px}
.article-title{font-size:clamp(26px,3.5vw,38px);font-weight:800;margin-bottom:12px;line-height:1.2}
.article-intro{font-size:16px;color:rgba(255,255,255,.65);margin-bottom:20px}
.keyword-tags{display:flex;flex-wrap:wrap;gap:6px}
.keyword-tag{padding:4px 12px;border-radius:var(--radius-pill);background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.12);font-size:12px;color:rgba(255,255,255,.7)}

.article-layout{display:grid;grid-template-columns:1fr 300px;gap:40px;padding:48px 0}
.article-main h2{font-size:22px;font-weight:700;margin:32px 0 12px;padding-bottom:8px;border-bottom:2px solid var(--primary-bg)}
.article-main h2:first-child{margin-top:0}
.article-main h3{font-size:17px;font-weight:600;margin:20px 0 8px}
.article-main p{font-size:15px;color:var(--text-light);line-height:1.8;margin-bottom:16px}
.article-main ul,.article-main ol{padding-left:20px;margin-bottom:16px}
.article-main li{font-size:14px;color:var(--text-light);line-height:1.8;margin-bottom:6px}
.article-main strong{color:var(--text);font-weight:600}
.article-main table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.article-main table th,.article-main table td{padding:10px 14px;border:1px solid rgba(0,0,0,.08);text-align:left}
.article-main table th{background:var(--bg-alt);font-weight:600;font-size:13px}
.article-main table td{color:var(--text-light)}

.inline-banner{background:linear-gradient(135deg,var(--primary-bg),#f5f3ff);border:1px solid rgba(192,38,211,.1);border-radius:var(--radius-lg);padding:28px;margin:28px 0}
.inline-banner-title{font-size:17px;font-weight:700;margin-bottom:6px}
.inline-banner-text{font-size:14px;color:var(--text-light);margin-bottom:14px}

.sidebar{position:sticky;top:80px;align-self:start}
.sidebar-box{background:var(--surface);border:1px solid rgba(0,0,0,.06);border-radius:var(--radius-lg);padding:24px;margin-bottom:16px}
.sidebar-title{font-size:15px;font-weight:700;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--primary-bg)}
.sidebar-dl-btn{display:flex;align-items:center;gap:10px;width:100%;padding:12px 16px;border-radius:10px;font-size:14px;font-weight:600;border:1px solid rgba(0,0,0,.06);margin-bottom:8px;transition:all .2s;background:var(--bg)}
.sidebar-dl-btn:hover{border-color:var(--primary);background:var(--primary-bg)}
.sidebar-dl-btn svg{width:20px;height:20px;flex-shrink:0}
.sidebar-toc{list-style:none}
.sidebar-toc li{margin-bottom:6px}
.sidebar-toc a{font-size:13px;color:var(--text-light);display:block;padding:6px 12px;border-radius:8px;border-left:3px solid transparent;transition:all .2s}
.sidebar-toc a:hover{color:var(--primary);background:var(--primary-bg);border-left-color:var(--primary)}
.sidebar-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sidebar-stat{text-align:center;padding:14px 8px;background:var(--bg);border-radius:10px}
.sidebar-stat-num{font-size:18px;font-weight:700;color:var(--primary)}
.sidebar-stat-label{font-size:11px;color:var(--text-muted)}
.sidebar-notice{display:flex;gap:10px;padding:14px;border-radius:10px;background:rgba(16,185,129,.04);border:1px solid rgba(16,185,129,.1);font-size:12px;color:var(--text-light);line-height:1.6}
.sidebar-notice svg{width:18px;height:18px;color:var(--emerald);flex-shrink:0;margin-top:2px}

/* ===== TIPS GRID ===== */
.tips-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:20px 0}
.tip-card{background:var(--bg);border-radius:10px;padding:20px;border-left:3px solid var(--primary)}
.tip-card h4{font-size:14px;font-weight:600;margin-bottom:6px}
.tip-card p{font-size:13px;color:var(--text-light);line-height:1.6;margin:0}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .hero-container{grid-template-columns:1fr;text-align:center}
  .hero-subtext{margin-left:auto;margin-right:auto}
  .hero-buttons{justify-content:center}
  .hero-trust{justify-content:center}
  .hero-mockup{max-width:480px;margin:0 auto}
  .suite-grid{grid-template-columns:repeat(2,1fr)}
  .advantage-row{grid-template-columns:1fr;gap:32px}
  .advantage-row.rev .advantage-text{order:1}
  .advantage-row.rev .advantage-visual{order:2}
  .advantage-visual{max-width:420px;margin:0 auto;width:100%}
  .counter-row{grid-template-columns:repeat(3,1fr)}
  .counter-item:nth-child(3)::after{display:none}
  .install-grid{grid-template-columns:1fr}
  .article-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .tips-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-items{display:none}
  .nav-container{height:56px}
  .hero-section{padding:48px 0 60px}
  .section{padding:48px 0}
  .suite-grid{grid-template-columns:1fr}
  .platform-row{grid-template-columns:1fr 1fr}
  .counter-row{grid-template-columns:1fr 1fr}
  .counter-item::after{display:none}
  .testimonial-grid{grid-template-columns:1fr}
  .req-grid{grid-template-columns:1fr 1fr}
  .dl-secondary{grid-template-columns:1fr}
  .dl-primary-specs{grid-template-columns:1fr}
  .tips-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .platform-row{grid-template-columns:1fr}
  .counter-row{grid-template-columns:1fr}
  .req-grid{grid-template-columns:1fr}
  .hero-headline{font-size:28px}
}

/* mobile nav toggle */
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:all .2s}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .nav-items{position:absolute;top:56px;left:0;right:0;background:var(--surface);flex-direction:column;padding:16px;box-shadow:var(--shadow-md);border-top:1px solid rgba(0,0,0,.06)}
  .nav-items.show{display:flex}
}