/* ============================================
   有道翻译 — Language Bridge 主题
   配色：Teal #0891B2 + Amber #F59E0B + Deep Slate
   ============================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --teal:#0891B2;
  --teal-dark:#0E7490;
  --teal-light:#ECFEFF;
  --teal-50:#F0FDFA;
  --amber:#F59E0B;
  --amber-dark:#D97706;
  --amber-light:#FFFBEB;
  --slate:#0F172A;
  --slate-700:#334155;
  --slate-500:#64748B;
  --slate-400:#94A3B8;
  --slate-200:#E2E8F0;
  --slate-100:#F1F5F9;
  --white:#FFFFFF;
  --radius:12px;
  --radius-lg:16px;
  --radius-xl:20px;
  --shadow:0 4px 20px rgba(8,145,178,.1);
  --shadow-lg:0 12px 40px rgba(8,145,178,.15);
  --transition:all .25s ease;
}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,'Microsoft YaHei','PingFang SC',sans-serif;color:var(--slate);background:var(--white);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
button{font-family:inherit}

@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes orbit{from{transform:rotate(0deg) translateX(140px) rotate(0deg)}to{transform:rotate(360deg) translateX(140px) rotate(-360deg)}}
@keyframes orbit-sm{from{transform:rotate(0deg) translateX(90px) rotate(0deg)}to{transform:rotate(360deg) translateX(90px) rotate(-360deg)}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}
@keyframes pulse-ring{0%{transform:scale(.8);opacity:1}100%{transform:scale(2.2);opacity:0}}
@keyframes slide-in-left{from{opacity:0;transform:translateX(-40px)}to{opacity:1;transform:none}}
@keyframes slide-in-right{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:none}}

/* ===== CONTAINER ===== */
.container{max-width:1200px;margin:0 auto;padding:0 28px}

/* ===== NAVIGATION ===== */
.top-bar{background:linear-gradient(90deg,var(--teal),var(--teal-dark));color:#fff;text-align:center;padding:8px 16px;font-size:.78rem;font-weight:500;letter-spacing:.02em}
.top-bar strong{color:var(--amber)}

header{position:sticky;top:0;z-index:500;background:rgba(255,255,255,.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--slate-200);transition:box-shadow .3s}
header.scrolled{box-shadow:0 2px 24px rgba(0,0,0,.08)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:0 28px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.12rem;font-weight:800;color:var(--teal);letter-spacing:-.3px}
.logo svg{width:34px;height:34px;flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none}
.nav-links a{display:inline-flex;align-items:center;gap:4px;font-size:.88rem;color:var(--slate-500);font-weight:600;padding:7px 16px;border-radius:8px;transition:var(--transition)}
.nav-links a:hover{color:var(--teal);background:var(--teal-light)}
.nav-links a.active{color:var(--white);background:var(--teal);font-weight:700}
.nav-dl{display:inline-flex;align-items:center;gap:6px;background:var(--amber);color:var(--slate);padding:9px 20px;border-radius:10px;font-size:.86rem;font-weight:700;border:none;cursor:pointer;transition:var(--transition);white-space:nowrap}
.nav-dl:hover{background:var(--amber-dark);transform:translateY(-1px)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;background:none;border:none}
.hamburger span{display:block;width:22px;height:2px;background:var(--slate);border-radius:2px;transition:all .3s}
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--slate-200);flex-direction:column;gap:0;padding:8px 12px;box-shadow:0 8px 24px rgba(0,0,0,.1)}
  .nav-links.open{display:flex}
  .nav-links a{display:block;padding:12px 16px;width:100%;border-radius:8px}
  .hamburger{display:flex}
  .nav-dl{display:none}
}

/* ===== SECTION TITLE ===== */
.sec-title{text-align:center;margin-bottom:48px}
.sec-title .label{display:inline-flex;align-items:center;gap:6px;background:var(--teal-light);color:var(--teal);font-size:.78rem;font-weight:700;padding:5px 14px;border-radius:20px;margin-bottom:14px;text-transform:uppercase;letter-spacing:.5px}
.sec-title h2{font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:800;color:var(--slate);line-height:1.2;letter-spacing:-.3px}
.sec-title p{font-size:1rem;color:var(--slate-500);margin-top:10px;max-width:560px;margin-left:auto;margin-right:auto}

/* ===== HERO ===== */
.hero{background:linear-gradient(160deg,#042F2E 0%,#0E4A5A 30%,#0891B2 65%,#06B6D4 100%);color:#fff;padding:80px 28px 70px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 70% 20%,rgba(245,158,11,.15) 0%,transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;max-width:1200px;margin:0 auto;position:relative;z-index:1}
.hero-text{animation:fadeUp .6s ease both}
.hero-chip{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:24px;padding:5px 14px;font-size:.78rem;font-weight:600;margin-bottom:20px}
.hero-chip-dot{width:8px;height:8px;background:var(--amber);border-radius:50%;position:relative}
.hero-chip-dot::after{content:'';position:absolute;inset:-4px;border-radius:50%;border:2px solid var(--amber);animation:pulse-ring 2s ease infinite}
.hero h1{font-size:clamp(2rem,4.5vw,3.2rem);font-weight:900;line-height:1.12;margin-bottom:16px;letter-spacing:-.5px}
.hero h1 .hl{color:var(--amber)}
.hero-desc{font-size:1.02rem;opacity:.88;line-height:1.8;margin-bottom:30px;max-width:480px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:10px;font-size:.95rem;font-weight:700;cursor:pointer;border:none;transition:var(--transition)}
.btn svg{width:18px;height:18px}
.btn-amber{background:var(--amber);color:var(--slate)}
.btn-amber:hover{background:var(--amber-dark);transform:translateY(-2px)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.4)}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover{background:var(--teal-dark);transform:translateY(-2px)}

.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;min-height:340px;animation:fadeIn .8s ease .2s both}
.hero-orb{width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.08);border:2px solid rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;position:relative}
.hero-orb-inner{width:120px;height:120px;border-radius:50%;background:linear-gradient(135deg,var(--amber),#FBBF24);display:flex;align-items:center;justify-content:center;box-shadow:0 0 60px rgba(245,158,11,.4)}
.hero-orb-inner svg{width:52px;height:52px;color:var(--slate)}
.lang-tag{position:absolute;background:rgba(255,255,255,.95);color:var(--slate);font-size:.72rem;font-weight:700;padding:6px 12px;border-radius:20px;box-shadow:0 4px 16px rgba(0,0,0,.15);white-space:nowrap}
.lang-tag.t1{animation:orbit 18s linear infinite}
.lang-tag.t2{animation:orbit 18s linear infinite;animation-delay:-4.5s}
.lang-tag.t3{animation:orbit 18s linear infinite;animation-delay:-9s}
.lang-tag.t4{animation:orbit 18s linear infinite;animation-delay:-13.5s}
.lang-tag-sm{position:absolute;background:rgba(6,182,212,.9);color:#fff;font-size:.66rem;font-weight:600;padding:4px 10px;border-radius:14px;white-space:nowrap}
.lang-tag-sm.s1{animation:orbit-sm 14s linear infinite reverse}
.lang-tag-sm.s2{animation:orbit-sm 14s linear infinite reverse;animation-delay:-4.67s}
.lang-tag-sm.s3{animation:orbit-sm 14s linear infinite reverse;animation-delay:-9.34s}
.hero-stats{display:flex;flex-wrap:wrap;gap:44px;margin-top:56px;padding-top:40px;border-top:1px solid rgba(255,255,255,.15)}
.hero-stat strong{display:block;font-size:1.8rem;font-weight:900;color:var(--amber);line-height:1}
.hero-stat span{font-size:.78rem;opacity:.7;margin-top:4px;display:block}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero-btns{justify-content:center}
  .hero-visual{min-height:280px}
  .hero-stats{justify-content:center}
}

/* ===== FEATURES STRIP ===== */
.features-strip{padding:64px 28px;background:var(--white)}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:1200px;margin:0 auto}
.strip-card{background:var(--slate-100);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;transition:var(--transition);border:1px solid transparent}
.strip-card:hover{background:var(--white);border-color:var(--teal);box-shadow:var(--shadow)}
.strip-card .icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.strip-card .icon svg{width:28px;height:28px}
.strip-card .icon.teal{background:var(--teal-light);color:var(--teal)}
.strip-card .icon.amber{background:var(--amber-light);color:var(--amber-dark)}
.strip-card .icon.slate{background:var(--slate-200);color:var(--slate-700)}
.strip-card .icon.green{background:#ECFDF5;color:#059669}
.strip-card h3{font-size:1rem;font-weight:700;margin-bottom:8px;color:var(--slate)}
.strip-card p{font-size:.85rem;color:var(--slate-500);line-height:1.6}
@media(max-width:900px){.strip-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.strip-grid{grid-template-columns:1fr}}

/* ===== ZIGZAG FEATURE ROWS ===== */
.zigzag{padding:72px 28px}
.zigzag-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;max-width:1200px;margin:0 auto 64px}
.zigzag-row:last-child{margin-bottom:0}
.zigzag-row.reverse{direction:rtl}
.zigzag-row.reverse>*{direction:ltr}
.zigzag-img{background:linear-gradient(135deg,var(--teal-light),var(--amber-light));border-radius:var(--radius-xl);padding:40px;display:flex;align-items:center;justify-content:center;min-height:280px;position:relative;overflow:hidden}
.zigzag-img svg{width:120px;height:120px;color:var(--teal);opacity:.8}
.zigzag-img::after{content:'';position:absolute;inset:0;background:linear-gradient(45deg,transparent 40%,rgba(255,255,255,.5) 50%,transparent 60%);background-size:200% 200%;animation:shimmer 4s ease infinite}
.zigzag-content .tag{display:inline-flex;align-items:center;gap:5px;background:var(--teal-light);color:var(--teal);font-size:.72rem;font-weight:700;padding:4px 12px;border-radius:16px;margin-bottom:14px;text-transform:uppercase;letter-spacing:.3px}
.zigzag-content h3{font-size:1.5rem;font-weight:800;margin-bottom:12px;color:var(--slate);line-height:1.25}
.zigzag-content p{font-size:.92rem;color:var(--slate-500);line-height:1.75;margin-bottom:16px}
.zigzag-content ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.zigzag-content ul li{display:flex;align-items:flex-start;gap:10px;font-size:.88rem;color:var(--slate-700)}
.zigzag-content ul li svg{width:18px;height:18px;color:var(--teal);flex-shrink:0;margin-top:2px}
@media(max-width:768px){
  .zigzag-row,.zigzag-row.reverse{grid-template-columns:1fr;direction:ltr}
  .zigzag-row.reverse>*{direction:ltr}
}

/* ===== PLATFORMS ===== */
.platforms{padding:72px 28px;background:var(--slate-100)}
.plat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:1200px;margin:0 auto}
.plat-card{background:var(--white);border-radius:var(--radius-lg);padding:28px 20px;text-align:center;border:1px solid var(--slate-200);transition:var(--transition)}
.plat-card:hover{box-shadow:var(--shadow-lg);border-color:var(--teal);transform:translateY(-4px)}
.plat-card.featured{background:linear-gradient(145deg,#042F2E,#0891B2);color:#fff;border-color:transparent}
.plat-card.featured h4,.plat-card.featured p{color:#fff}
.plat-card.featured p{opacity:.8}
.plat-card .plat-icon{width:52px;height:52px;margin:0 auto 16px}
.plat-card .plat-icon svg{width:52px;height:52px}
.plat-card h4{font-size:1rem;font-weight:700;margin-bottom:6px}
.plat-card p{font-size:.82rem;color:var(--slate-500);margin-bottom:16px;line-height:1.5}
.plat-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;border-radius:9px;font-size:.85rem;font-weight:700;cursor:pointer;border:none;transition:var(--transition)}
.plat-btn.primary{background:var(--amber);color:var(--slate)}
.plat-btn.primary:hover{background:var(--amber-dark)}
.plat-btn.outline{background:transparent;color:var(--teal);border:2px solid var(--teal)}
.plat-btn.outline:hover{background:var(--teal-light)}
.plat-card.featured .plat-btn.primary{background:var(--amber);color:var(--slate)}
@media(max-width:900px){.plat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.plat-grid{grid-template-columns:1fr}}

/* ===== REVIEWS ===== */
.reviews{padding:72px 28px;background:var(--white)}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1200px;margin:0 auto}
.review-card{background:var(--slate-100);border-radius:var(--radius-lg);padding:28px 24px;transition:var(--transition);border-left:4px solid var(--teal)}
.review-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.review-stars{display:flex;gap:3px;margin-bottom:12px}
.review-stars svg{width:16px;height:16px;color:var(--amber)}
.review-text{font-size:.9rem;color:var(--slate-700);line-height:1.7;margin-bottom:16px;font-style:italic}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:36px;height:36px;border-radius:50%;background:var(--teal);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.8rem;font-weight:700}
.review-name{font-size:.82rem;font-weight:700;color:var(--slate)}
.review-role{font-size:.72rem;color:var(--slate-500)}
@media(max-width:768px){.review-grid{grid-template-columns:1fr}}

/* ===== FAQ ===== */
.faq{padding:72px 28px;background:var(--slate-100)}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--slate-200);transition:var(--transition)}
.faq-item.open{border-color:var(--teal);box-shadow:var(--shadow)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-size:.92rem;font-weight:700;color:var(--slate);gap:12px;transition:var(--transition);background:none;border:none;width:100%;text-align:left;font-family:inherit;line-height:1.4}
.faq-q:hover{color:var(--teal)}
.faq-q svg{width:20px;height:20px;flex-shrink:0;transition:transform .25s;color:var(--slate-400)}
.faq-item.open .faq-q svg{transform:rotate(180deg);color:var(--teal)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 22px 18px;font-size:.88rem;color:var(--slate-500);line-height:1.75}

/* ===== CTA BANNER ===== */
.cta-banner{padding:72px 28px;background:linear-gradient(135deg,#042F2E 0%,#0891B2 100%);color:#fff;text-align:center}
.cta-banner h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;margin-bottom:14px}
.cta-banner p{font-size:1rem;opacity:.85;max-width:520px;margin:0 auto 28px;line-height:1.7}
.cta-banner .btn-amber{font-size:1rem;padding:15px 36px;border-radius:12px}

/* ===== FOOTER ===== */
footer{padding:36px 28px;background:var(--slate);color:var(--slate-400);text-align:center;font-size:.78rem;line-height:1.8}
footer .verify{display:flex;align-items:center;justify-content:center;gap:6px;margin-bottom:8px;color:#4ADE80;font-weight:600;font-size:.82rem}
footer .verify svg{width:16px;height:16px}
footer .copy{opacity:.7}

/* ===== DOWNLOAD PAGE ===== */
.dl-hero{background:linear-gradient(160deg,#042F2E 0%,#0E4A5A 40%,#0891B2 100%);color:#fff;padding:72px 28px 64px;text-align:center;position:relative;overflow:hidden}
.dl-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 120%,rgba(245,158,11,.12) 0%,transparent 50%)}
.dl-hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:900;margin-bottom:14px;position:relative}
.dl-hero p{font-size:1rem;opacity:.85;max-width:520px;margin:0 auto;position:relative}

.dl-main{padding:56px 28px;background:var(--slate-100)}
.dl-win{max-width:1000px;margin:0 auto 40px;background:var(--white);border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--slate-200);box-shadow:var(--shadow-lg)}
.dl-win-inner{display:grid;grid-template-columns:1fr 1fr;gap:0}
.dl-win-left{background:linear-gradient(145deg,#042F2E,#0891B2);color:#fff;padding:44px 36px;display:flex;flex-direction:column;justify-content:center}
.dl-win-left h2{font-size:1.6rem;font-weight:800;margin-bottom:12px}
.dl-win-left p{font-size:.9rem;opacity:.85;line-height:1.7;margin-bottom:24px}
.dl-win-meta{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:28px}
.dl-win-meta-item{background:rgba(255,255,255,.1);border-radius:10px;padding:12px 14px}
.dl-win-meta-item .label{font-size:.68rem;opacity:.6;text-transform:uppercase;letter-spacing:.5px;margin-bottom:2px}
.dl-win-meta-item .value{font-size:.88rem;font-weight:700}
.dl-win-right{padding:44px 36px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:20px}
.dl-win-right .plat-icon{width:72px;height:72px}
.dl-win-right .plat-icon svg{width:72px;height:72px;color:var(--teal)}
.dl-win-right h3{font-size:1.2rem;font-weight:700}
.dl-win-right .dl-btn{display:inline-flex;align-items:center;gap:8px;background:var(--amber);color:var(--slate);padding:14px 32px;border-radius:12px;font-size:1rem;font-weight:700;cursor:pointer;border:none;transition:var(--transition)}
.dl-win-right .dl-btn:hover{background:var(--amber-dark);transform:translateY(-2px)}
.dl-win-right .dl-note{font-size:.78rem;color:var(--slate-500)}
@media(max-width:768px){.dl-win-inner{grid-template-columns:1fr}}

.dl-others{max-width:1000px;margin:0 auto 40px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.dl-other-card{background:var(--white);border-radius:var(--radius-lg);padding:28px 20px;text-align:center;border:1px solid var(--slate-200);transition:var(--transition)}
.dl-other-card:hover{box-shadow:var(--shadow);border-color:var(--teal)}
.dl-other-card .plat-icon{width:44px;height:44px;margin:0 auto 14px}
.dl-other-card .plat-icon svg{width:44px;height:44px;color:var(--teal)}
.dl-other-card h4{font-size:.95rem;font-weight:700;margin-bottom:4px}
.dl-other-card p{font-size:.8rem;color:var(--slate-500);margin-bottom:14px}
.dl-other-card .plat-btn{font-size:.82rem;padding:9px 18px}
@media(max-width:600px){.dl-others{grid-template-columns:1fr}}

/* Tabs */
.tabs-wrap{max-width:1000px;margin:0 auto 40px}
.tabs-nav{display:flex;gap:4px;margin-bottom:16px;background:var(--white);border-radius:10px;padding:4px;border:1px solid var(--slate-200);width:fit-content}
.tabs-nav button{padding:9px 20px;border-radius:8px;border:none;background:none;font-size:.84rem;font-weight:600;color:var(--slate-500);cursor:pointer;transition:var(--transition);font-family:inherit}
.tabs-nav button.active{background:var(--teal);color:#fff}
.tab-panel{display:none}
.tab-panel.active{display:block}
.spec-table{width:100%;border-collapse:collapse;background:var(--white);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--slate-200)}
.spec-table th,.spec-table td{padding:14px 18px;text-align:left;font-size:.85rem;border-bottom:1px solid var(--slate-200)}
.spec-table th{background:var(--slate-100);font-weight:700;color:var(--slate);font-size:.8rem;text-transform:uppercase;letter-spacing:.3px}
.spec-table td{color:var(--slate-700)}

/* Install steps */
.install-steps{max-width:1000px;margin:0 auto}
.steps-track{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.step-card{background:var(--white);border-radius:var(--radius-lg);padding:24px 16px;text-align:center;border:1px solid var(--slate-200);transition:var(--transition);position:relative}
.step-card:hover{border-color:var(--teal);box-shadow:var(--shadow)}
.step-num{width:36px;height:36px;border-radius:50%;background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.82rem;font-weight:800;margin:0 auto 12px}
.step-card h4{font-size:.88rem;font-weight:700;margin-bottom:6px}
.step-card p{font-size:.78rem;color:var(--slate-500);line-height:1.5}
@media(max-width:768px){.steps-track{grid-template-columns:repeat(2,1fr)}.steps-track .step-card:last-child{grid-column:span 2}}
@media(max-width:520px){.steps-track{grid-template-columns:1fr}.steps-track .step-card:last-child{grid-column:span 1}}

/* ===== SEO / ZH-CN PAGE ===== */
.article-hero{background:linear-gradient(160deg,#042F2E 0%,#0891B2 100%);color:#fff;padding:64px 28px;text-align:center;position:relative;overflow:hidden}
.article-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 80%,rgba(245,158,11,.1) 0%,transparent 50%)}
.article-hero h1{font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:900;margin-bottom:10px;position:relative}
.article-hero .breadcrumb{font-size:.82rem;opacity:.7;margin-bottom:16px;position:relative}
.article-hero .breadcrumb a{color:var(--amber);text-decoration:underline}
.article-hero .meta{display:flex;align-items:center;justify-content:center;gap:20px;font-size:.8rem;opacity:.7;position:relative}
.kw-cloud{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:18px;position:relative}
.kw-tag{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:.72rem;padding:4px 12px;border-radius:16px;font-weight:500}

.article-layout{display:grid;grid-template-columns:1fr 280px;gap:40px;max-width:1200px;margin:0 auto;padding:56px 28px;align-items:start}
.article-body h2{font-size:1.4rem;font-weight:800;color:var(--slate);margin:36px 0 14px;padding-bottom:10px;border-bottom:2px solid var(--teal-light)}
.article-body h2:first-child{margin-top:0}
.article-body p{font-size:.92rem;color:var(--slate-700);line-height:1.85;margin-bottom:16px}
.article-body ul,.article-body ol{margin-bottom:16px;padding-left:20px}
.article-body li{font-size:.9rem;color:var(--slate-700);line-height:1.75;margin-bottom:6px}
.article-body strong{color:var(--slate)}

/* Comparison table */
.compare-table{width:100%;border-collapse:collapse;margin:20px 0 24px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--slate-200)}
.compare-table th,.compare-table td{padding:12px 14px;text-align:center;font-size:.82rem;border-bottom:1px solid var(--slate-200)}
.compare-table th{background:var(--teal);color:#fff;font-weight:700}
.compare-table tr:nth-child(even){background:var(--slate-100)}
.compare-table td:first-child{text-align:left;font-weight:600;color:var(--slate)}

/* Tips grid */
.tips-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:20px 0 24px}
.tip-card{background:var(--slate-100);border-radius:var(--radius);padding:18px;border:1px solid var(--slate-200)}
.tip-card h4{font-size:.88rem;font-weight:700;color:var(--teal);margin-bottom:6px}
.tip-card p{font-size:.82rem;color:var(--slate-500);line-height:1.6}

/* Version log */
.version-log{margin:20px 0 24px}
.version-item{display:flex;gap:16px;padding:14px 0;border-bottom:1px solid var(--slate-200)}
.version-item:last-child{border-bottom:none}
.version-badge{background:var(--teal-light);color:var(--teal);font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:8px;white-space:nowrap;height:fit-content}
.version-info h4{font-size:.86rem;font-weight:700;color:var(--slate);margin-bottom:2px}
.version-info p{font-size:.8rem;color:var(--slate-500);line-height:1.5}

/* Sidebar */
.article-sidebar{position:sticky;top:80px}
.sidebar-toc{background:var(--white);border-radius:var(--radius-lg);padding:24px;border:1px solid var(--slate-200);margin-bottom:20px}
.sidebar-toc h3{font-size:.9rem;font-weight:700;color:var(--slate);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--slate-200)}
.sidebar-toc a{display:block;font-size:.82rem;color:var(--slate-500);padding:6px 0 6px 12px;border-left:2px solid transparent;transition:var(--transition);line-height:1.4}
.sidebar-toc a:hover,.sidebar-toc a.active{color:var(--teal);border-left-color:var(--teal)}
.sidebar-dl{background:linear-gradient(145deg,#042F2E,#0891B2);color:#fff;border-radius:var(--radius-lg);padding:24px;text-align:center}
.sidebar-dl h4{font-size:.95rem;font-weight:700;margin-bottom:8px}
.sidebar-dl p{font-size:.8rem;opacity:.8;margin-bottom:16px;line-height:1.5}
.sidebar-dl .btn-amber{font-size:.88rem;padding:11px 24px;width:100%}

/* Article CTA */
.article-cta{background:linear-gradient(135deg,var(--teal),var(--teal-dark));border-radius:var(--radius-xl);padding:40px;text-align:center;color:#fff;margin:40px 0 16px}
.article-cta h3{font-size:1.3rem;font-weight:800;margin-bottom:10px}
.article-cta p{font-size:.9rem;opacity:.85;margin-bottom:20px;line-height:1.6}
.article-cta .cta-link{display:inline-flex;align-items:center;gap:8px;background:var(--amber);color:var(--slate);padding:13px 30px;border-radius:10px;font-size:.95rem;font-weight:700;transition:var(--transition)}
.article-cta .cta-link:hover{background:var(--amber-dark);transform:translateY(-2px)}

@media(max-width:900px){
  .article-layout{grid-template-columns:1fr}
  .article-sidebar{position:static;display:grid;grid-template-columns:1fr 1fr;gap:16px}
}
@media(max-width:520px){
  .article-sidebar{grid-template-columns:1fr}
  .tips-grid{grid-template-columns:1fr}
}