/* ===== Platform Page Styles ===== */
/* Scoped under body.page-platform to avoid conflicts */

body.page-platform { background: var(--bg) !important; }

/* ===== Hero ===== */
.plat-hero { position: relative; overflow: hidden; }
.plat-hero-inner {
    max-width: 1240px; margin: 0 auto;
    padding: 28px 40px 18px;
    position: relative; z-index: 1;
}
.plat-breadcrumb {
    padding: 0 0 6px;
    font-size: 13px; color: var(--text3);
}
.plat-breadcrumb a { color: var(--text2); transition: color .15s; }
.plat-breadcrumb a:hover { color: var(--purple); }
.plat-breadcrumb .sep { margin: 0 8px; color: var(--text3); opacity: .7; }
.plat-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(109,40,217,0.10);
    border-radius: 50px; padding: 8px 20px;
    font-size: 14px; font-weight: 600; color: var(--purple);
    margin: 0 0 8px;
}
.plat-badge::before {
    content: ''; width: 6px; height: 6px; border-radius: 50%;
    background: var(--green); animation: plat-blink 2s infinite;
}
@keyframes plat-blink { 0%,100% { opacity:1; } 50% { opacity:0.3; } }
.plat-title {
    font-size: 36px; font-weight: 900; line-height: 1.2; margin-bottom: 10px;
    background: var(--grad);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.plat-hero .trust-badges { display: flex; gap: 24px; flex-wrap: wrap; }
.plat-hero .t-item { display: flex; align-items: center; gap: 9px; }
.plat-hero .t-ico {
    width: 34px; height: 34px; border-radius: 9px;
    background: var(--s2); border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-size: 15px; color: var(--purple);
}
.plat-hero .t-item strong { font-size: 13px; font-weight: 700; color: var(--text); display: block; }
.plat-hero .t-item span { font-size: 11px; color: var(--text3); }

/* Hero 装饰 */
.plat-hero .hero-decor { position: absolute; pointer-events: none; z-index: 0; }
.plat-hero .hero-decor-1 { top:12%;left:8%;width:160px;height:160px;border-radius:50%;border:2px solid rgba(124,106,255,0.18);animation:plat-ring 10s linear infinite; }
.plat-hero .hero-decor-2 { top:18%;right:15%;width:80px;height:80px;border-radius:14px;background:rgba(168,85,247,0.08);animation:plat-shape-spin 8s ease-in-out infinite; }
.plat-hero .hero-decor-3 { bottom:25%;right:6%;width:120px;height:120px;border-radius:50%;border:2px solid rgba(71,209,137,0.15);animation:plat-ring 14s linear infinite reverse; }
.plat-hero .hero-decor-4 { top:55%;left:3%;width:18px;height:18px;border-radius:50%;background:rgba(162,155,254,0.35);animation:plat-dot-float 4s ease-in-out infinite; }
.plat-hero .hero-decor-5 { bottom:15%;left:25%;width:60px;height:60px;border-radius:10px;border:2px solid rgba(124,106,255,0.12);animation:plat-shape-spin 12s ease-in-out infinite reverse; }
.plat-hero .hero-decor-6 { top:30%;left:45%;width:12px;height:12px;border-radius:50%;background:rgba(168,85,247,0.3);animation:plat-dot-float 3s ease-in-out infinite 0.5s; }
.plat-hero .hero-decor-7 { bottom:35%;right:25%;width:14px;height:14px;border-radius:2px;background:rgba(71,209,137,0.25);animation:plat-dot-float 5s ease-in-out infinite 1s; }
.plat-hero .hero-decor-8 { top:65%;right:40%;width:200px;height:200px;border-radius:50%;border:1.5px solid rgba(124,106,255,0.10);animation:plat-ring 18s linear infinite; }

@keyframes plat-ring {
    0% { transform: rotate(0deg) translate(40px,0) scale(1); }
    50% { transform: rotate(180deg) translate(40px,0) scale(1.2); }
    100% { transform: rotate(360deg) translate(40px,0) scale(1); }
}
@keyframes plat-shape-spin {
    0%,100% { transform: rotate(0deg) translate(0,0); }
    25% { transform: rotate(90deg) translate(-40px,30px); }
    50% { transform: rotate(180deg) translate(20px,60px); }
    75% { transform: rotate(270deg) translate(30px,20px); }
}
@keyframes plat-dot-float {
    0%,100% { transform: translateY(0) rotate(0deg) scale(1); opacity: 0.15; }
    50% { transform: translateY(-35px) rotate(180deg) scale(1.5); opacity: 0.45; }
}

/* ===== 商品区 ===== */
.plat-section {
    max-width: 1240px; margin: 0 auto;
    padding: 32px 40px 48px;
    position: relative; z-index: 1;
}
.plat-section-inner { position: relative; }
.page-platform .section-head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 16px;
}
.page-platform .section-title {
    font-size: 17px; font-weight: 900;
    display: flex; align-items: center; gap: 8px; color: var(--text);
}
.page-platform .section-title::before {
    content: ''; width: 4px; height: 18px;
    background: var(--grad); border-radius: 2px;
}
/* 筛选面板 */
.plat-filter-panel { margin-bottom: 20px; }
.plat-filter-group { margin-bottom: 8px; }
.plat-filter-group:last-child { margin-bottom: 0; }
.plat-filter-label {
    font-size: 12px; color: var(--text3); font-weight: 600;
    width: 100%; margin-bottom: 4px;
}
/* 二级：灰色背景面板 */
.plat-filter-tags {
    display: flex; flex-wrap: wrap; gap: 8px;
    background: rgba(237,233,246,0.55); border-radius: 12px; padding: 12px 16px;
}
.plat-filter-tag {
    padding: 6px 18px; border-radius: 100px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.6);
    color: var(--text2);
    font-size: 13px; font-weight: 600;
    transition: all .14s;
    cursor: pointer; white-space: nowrap;
}
.plat-filter-tag:hover { color: var(--purple); border-color: var(--p2); }
.plat-filter-tag.active {
    color: #fff; background: var(--purple); border-color: var(--purple);
}
/* 三级：白色背景+边框 */
.plat-filter-tags-spec {
    background: var(--surface); border-radius: 12px;
    border: 1px solid var(--border);
    padding: 10px 16px;
}

/* 商品网格 */
.page-platform .product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.page-platform .product-card {
    background: var(--surface); border: 1.5px solid var(--border);
    border-radius: var(--radius); padding: 16px;
    transition: all .2s; display: flex; flex-direction: column;
    animation: plat-fadeUp .4s ease both; cursor: pointer;
    text-decoration: none; color: inherit;
}
.page-platform .product-card:hover { border-color: var(--p2); box-shadow: var(--shadow-lg); transform: translateY(-2px); text-decoration: none; color: inherit; }
@keyframes plat-fadeUp { from { opacity:0; transform:translateY(14px); } to { opacity:1; transform:translateY(0); } }

/* 卡片结构（完全复用首页样式） */
body.page-platform .card-top { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; position: relative; }
.page-platform .card-icon {
    width: 44px; height: 44px; border-radius: 10px;
    background: var(--s2); border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0;
}
.page-platform .card-name { font-size: 14px; font-weight: 700; line-height: 1.3; color: var(--text); }
.page-platform .card-type { font-size: 11px; color: var(--text3); margin-top: 2px; }
body.page-platform .card-badge {
    position: absolute; bottom: 0; left: 0;
    background: #ef4444; color: #fff;
    font-size: 9px; font-weight: 700; padding: 2px 8px;
    border-radius: 0 8px 0 var(--radius);
}
body.page-platform .card-price {
    display: flex; align-items: baseline; gap: 2px;
    margin-bottom: 12px;
}
body.page-platform .card-price .price-sym { font-size: 14px; color: var(--text2); font-weight: 700; }
body.page-platform .card-price .price-num {
    font-size: 28px; font-weight: 900; line-height: 1;
    background: var(--grad);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
body.page-platform .card-price .price-unit { font-size: 12px; color: var(--text3); margin-left: 2px; }
body.page-platform .card-divider { display: none; }
body.page-platform .card-footer { display: flex; align-items: center; justify-content: space-between; background: var(--surface); margin-top: auto; }
body.page-platform .card-stock { font-size: 11px; color: var(--green); font-weight: 600; }
body.page-platform .card-buy {
    background: var(--grad); border: none; color: #fff;
    padding: 4px 12px; border-radius: 6px;
    font-size: 11px; font-weight: 700;
    box-shadow: 0 2px 8px rgba(109,40,217,.2);
    transition: opacity .13s; cursor: pointer;
}
body.page-platform .card-buy:hover { opacity: .84; }
body.page-platform .card-buy:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== 平台简介 ===== */
.plat-intro-wrap {
    max-width: 1240px; margin: 0 auto;
    padding: 0 40px 20px;
    position: relative; z-index: 2;
}
.plat-intro-wrap .intro-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 32px;
    display: flex; gap: 28px; align-items: flex-start;
    box-shadow: var(--shadow);
}
.plat-intro-wrap .intro-icon {
    flex-shrink: 0;
    width: 56px; height: 56px; border-radius: 14px;
    background: var(--s2); border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-size: 28px; color: #229ED9;
}
.plat-intro-wrap .intro-body { flex: 1; }
.plat-intro-wrap .intro-body h2 { font-size: 18px; font-weight: 800; color: var(--text); margin-bottom: 10px; }
.plat-intro-wrap .intro-body .intro-text,
.plat-intro-wrap .intro-body p { font-size: 14px; color: var(--text2); line-height: 1.8; margin-bottom: 14px; }
.intro-text p, .why-row-desc p, .faq-answer p { margin: 0 0 8px; }
.intro-text p:last-child, .why-row-desc p:last-child, .faq-answer p:last-child { margin-bottom: 0; }
.intro-text ul, .intro-text ol,
.why-row-desc ul, .why-row-desc ol,
.faq-answer ul, .faq-answer ol { padding-left: 1.5em; margin: 8px 0; }
.intro-text ul, .why-row-desc ul, .faq-answer ul { list-style: disc; }
.intro-text ol, .why-row-desc ol, .faq-answer ol { list-style: decimal; }
.intro-text li, .why-row-desc li, .faq-answer li { margin-bottom: 4px; line-height: 1.7; font-size: inherit; }
.intro-text strong, .why-row-desc strong, .faq-answer strong { color: var(--text); }
.plat-intro-wrap .intro-stats { display: flex; gap: 28px; flex-wrap: wrap; }
.plat-intro-wrap .intro-stat { display: flex; align-items: baseline; gap: 6px; }
.plat-intro-wrap .intro-stat strong { font-size: 22px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.plat-intro-wrap .intro-stat span { font-size: 12px; color: var(--text3); }

/* ===== 购买流程 — 横向时间线+网格背景 ===== */
.page-platform .section-steps {
    padding: 90px 0; position: relative; overflow: hidden;
    background: var(--s2);
}
.page-platform .bg-shape { position: absolute; pointer-events: none; z-index: 0; }
.page-platform .bg-shape-ring {
    width: 200px; height: 200px; border-radius: 50%;
    border: 2px solid rgba(109,40,217,0.10);
    bottom: 10%; left: 5%;
    animation: plat-ring-spin 35s linear infinite;
}
.page-platform .section-steps::before {
    content: ''; position: absolute; inset: -50px; opacity: 0.4; pointer-events: none;
    background-image:
        linear-gradient(rgba(123,45,254,0.12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(123,45,254,0.12) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse 60% 60% at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at center, black 30%, transparent 75%);
    animation: plat-grid-scroll 12s linear infinite;
}
@keyframes plat-grid-scroll {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}
@keyframes plat-ring-spin {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.2); }
    100% { transform: rotate(360deg) scale(1); }
}
.page-platform .container-v1 { max-width: 1200px; margin: 0 auto; padding: 0 40px; position: relative; z-index: 1; }
.page-platform .section-header { text-align: center; margin-bottom: 48px; }
.page-platform .section-tag {
    display: inline-block; background: var(--s2); color: var(--purple);
    font-size: 12px; font-weight: 700; padding: 5px 14px;
    border-radius: 16px; margin-bottom: 14px;
    letter-spacing: 2px; text-transform: uppercase;
}
.page-platform .section-header h2 {
    font-size: 28px; font-weight: 800; color: var(--text);
    margin-bottom: 10px; display: inline-block; position: relative;
}
.page-platform .section-header h2::after {
    content:''; position:absolute; bottom:-6px; left:50%;
    width:50px; height:3px; border-radius:2px;
    background: var(--grad); transform: translateX(-50%);
    transition: width 0.4s;
}
.page-platform .section-header:hover h2::after { width: 90px; }
.page-platform .section-header p { font-size: 15px; color: var(--text2); max-width: 500px; margin: 0 auto; }

/* 时间线 */
.page-platform .timeline { display: flex; justify-content: space-between; position: relative; padding: 0 40px; }
.page-platform .timeline::before {
    content: ''; position: absolute; top: 32px; left: 100px; right: 100px;
    height: 3px; background: var(--border); border-radius: 2px;
}
.page-platform .timeline::after {
    content: ''; position: absolute; top: 32px; left: 100px;
    width: 70%; height: 3px;
    background: var(--grad); border-radius: 2px;
}
.page-platform .timeline-step { text-align: center; position: relative; z-index: 2; flex: 1; }
.page-platform .timeline-dot {
    width: 64px; height: 64px; border-radius: 50%;
    background: var(--surface); border: 3px solid var(--purple);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 18px; font-size: 24px; color: var(--purple);
    box-shadow: 0 4px 15px rgba(123,45,254,0.15);
    transition: all 0.3s; position: relative;
}
.page-platform .timeline-dot::after {
    content: ''; position: absolute; inset: -6px; border-radius: 50%;
    border: 2px solid var(--purple);
    animation: plat-dot-ripple 3s ease-out infinite;
    opacity: 0;
}
.page-platform .timeline-step:nth-child(2) .timeline-dot::after { animation-delay: 0.5s; }
.page-platform .timeline-step:nth-child(3) .timeline-dot::after { animation-delay: 1s; }
.page-platform .timeline-step:nth-child(4) .timeline-dot::after { animation-delay: 1.5s; }
@keyframes plat-dot-ripple {
    0% { transform: scale(0.8); opacity: 0.6; }
    50% { transform: scale(1.3); opacity: 0; }
    100% { transform: scale(0.8); opacity: 0; }
}
.page-platform .timeline-step:hover .timeline-dot {
    background: var(--grad); color: white; border: 3px solid transparent;
    background-clip: padding-box;
    box-shadow: 0 8px 25px rgba(123,45,254,0.35); transform: scale(1.1);
}
.page-platform .timeline-step h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; color: var(--text); }
.page-platform .timeline-step p { font-size: 13px; color: var(--text2); max-width: 160px; margin: 0 auto; }

/* ===== Why Us — 左右交替 ===== */
.page-platform .section-why {
    padding: 80px 0; position: relative; overflow: hidden;
    background: var(--s2);
}
.page-platform .section-why::before {
    content: ''; position: absolute;
    width: 500px; height: 500px; border-radius: 50%;
    top: 50%; left: -150px; transform: translateY(-50%);
    background: radial-gradient(circle, rgba(123,45,254,0.18) 0%, rgba(123,45,254,0.06) 40%, transparent 65%);
    animation: plat-glow-wander 22s ease-in-out infinite;
}
.page-platform .section-why::after {
    content: ''; position: absolute;
    width: 300px; height: 300px; border-radius: 50%;
    top: 20%; right: -50px;
    border: 2px solid rgba(123,45,254,0.15);
    animation: plat-ring-spin 30s linear infinite;
}
@keyframes plat-glow-wander {
    0%,100% { transform: translateY(-50%) translate(0,0); }
    33% { transform: translateY(-50%) translate(200px,-60px); }
    66% { transform: translateY(-50%) translate(100px,80px); }
}
.page-platform .bg-shape-why-1 {
    width: 100px; height: 100px; border-radius: 50%;
    border: 2px solid rgba(155,92,246,0.12);
    top: 25%; right: 15%;
    animation: plat-shape-float-1 20s ease-in-out infinite;
}
.page-platform .bg-shape-why-2 {
    width: 60px; height: 60px; border-radius: 8px;
    background: rgba(123,45,254,0.08);
    bottom: 15%; left: 8%; transform: rotate(20deg);
    animation: plat-shape-float-2 16s ease-in-out infinite;
}
@keyframes plat-shape-float-1 {
    0%,100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(10deg); }
}
@keyframes plat-shape-float-2 {
    0%,100% { transform: rotate(30deg) translateX(0); }
    50% { transform: rotate(50deg) translateX(25px); }
}
.page-platform .section-why > .container-v1 { position: relative; z-index: 1; }

.page-platform .why-rows { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 1100px; margin: 0 auto; }
.page-platform .why-row {
    display: flex; flex-direction: column; gap: 14px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 16px; padding: 28px 24px;
    transition: all 0.3s;
}
.page-platform .why-row:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--p2); }
.page-platform .why-row:nth-child(even) { flex-direction: column; }
.page-platform .why-row-icon {
    flex-shrink: 0; width: 52px; height: 52px; border-radius: 14px;
    background: var(--grad); color: white;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; box-shadow: 0 4px 14px rgba(123,45,254,0.2);
}
.page-platform .why-row-body { flex: 1; }
.page-platform .why-row-body h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; color: var(--text); }
.page-platform .why-row-body p,
.page-platform .why-row-desc { font-size: 13px; color: var(--text2); line-height: 1.7; }
.page-platform .why-row-tag { display: none; }

/* ===== 评价 ===== */
.page-platform .section-reviews {
    padding: 80px 0; position: relative; overflow: hidden;
    background: #fff;
}
.page-platform .section-reviews::before {
    content: ''; position: absolute;
    width: 450px; height: 450px; border-radius: 50%;
    top: -150px; right: 10%;
    background: radial-gradient(circle, rgba(155,92,246,0.15) 0%, rgba(155,92,246,0.05) 45%, transparent 70%);
    animation: plat-rev-drift 18s ease-in-out infinite;
}
.page-platform .section-reviews::after {
    content: ''; position: absolute;
    width: 250px; height: 250px; border-radius: 50%;
    bottom: -60px; left: 15%;
    background: radial-gradient(circle, rgba(5,150,105,0.12) 0%, transparent 60%);
    animation: plat-rev-drift-2 22s ease-in-out infinite;
}
@keyframes plat-rev-drift {
    0%,100% { transform: translate(0,0) scale(1); }
    25% { transform: translate(-100px,-50px) scale(1.1); }
    50% { transform: translate(-60px,-100px) scale(0.9); }
    75% { transform: translate(40px,-60px) scale(1.05); }
}
@keyframes plat-rev-drift-2 {
    0%,100% { transform: translate(0,0) scale(1); }
    25% { transform: translate(120px,60px) scale(1.15); }
    50% { transform: translate(80px,120px) scale(0.95); }
    75% { transform: translate(-30px,80px) scale(1.1); }
}
.page-platform .bg-shape-rev-ring {
    width: 180px; height: 180px; border-radius: 50%;
    border: 2px solid rgba(155,92,246,0.1);
    bottom: 10%; left: 8%;
    animation: plat-ring-spin 28s linear infinite reverse;
}
.page-platform .section-reviews > .container-v1 { position: relative; z-index: 1; }

.page-platform .reviews-carousel {
    overflow: hidden; padding: 8px 0;
    mask-image: linear-gradient(to right, transparent 0%, black 4%, black 96%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 4%, black 96%, transparent 100%);
}
.page-platform .reviews-track {
    display: flex; gap: 24px; width: max-content;
    animation: plat-reviews-scroll 30s linear infinite;
}
.page-platform .reviews-carousel:hover .reviews-track { animation-play-state: paused; }
@keyframes plat-reviews-scroll { 0% { transform: translateX(0); } 100% { transform: translateX(calc(-50% - 12px)); } }

.page-platform .review-card {
    flex: 0 0 380px; max-width: 380px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 20px; padding: 30px;
    position: relative; transition: all 0.3s;
}
.page-platform .review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.page-platform .review-card .quote-mark { position: absolute; top: 16px; right: 20px; font-size: 52px; color: var(--s2); font-weight: 900; line-height: 1; font-family: Georgia,serif; transition: all 0.4s; }
.page-platform .review-card:hover .quote-mark { transform: rotate(-8deg) scale(1.15); color: var(--p2); }
.page-platform .review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.page-platform .review-avatar { width: 46px; height: 46px; border-radius: 14px; background: var(--grad); color: white; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 17px; }
.page-platform .review-name { font-weight: 700; font-size: 15px; }
.page-platform .review-platform { font-size: 12px; color: var(--text3); }
.page-platform .review-stars { color: var(--star); font-size: 13px; margin-bottom: 14px; display: flex; gap: 2px; }
.page-platform .review-text { font-size: 14px; color: var(--text2); line-height: 1.8; }

/* ===== FAQ — 全宽手风琴 ===== */
.page-platform .section-faq {
    padding: 80px 0; position: relative; overflow: hidden;
    background: #f0edfb;
}
.page-platform .section-faq::before {
    content: ''; position: absolute; inset: -50px; opacity: 0.4; pointer-events: none;
    background-image:
        linear-gradient(rgba(123,45,254,0.12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(123,45,254,0.12) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse 60% 60% at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at center, black 30%, transparent 75%);
    animation: plat-grid-scroll 12s linear infinite;
}
.page-platform .section-faq::after {
    content: ''; position: absolute;
    width: 500px; height: 500px; border-radius: 50%;
    top: 15%; right: -5%;
    background: radial-gradient(circle, rgba(123,45,254,0.25) 0%, rgba(123,45,254,0.08) 40%, transparent 65%);
    animation: plat-soft-float-1 18s ease-in-out infinite;
}
@keyframes plat-soft-float-1 {
    0%,100% { transform: translate(0, 0); }
    50% { transform: translate(-40px, 30px); }
}
.page-platform .section-faq > .container-v1 { position: relative; z-index: 1; }

.page-platform .faq-list { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: start; }
.page-platform .faq-item {
    border: 1px solid var(--border); border-radius: 14px;
    overflow: hidden;
    background: var(--surface); transition: all 0.3s;
}
.page-platform .faq-item:hover { border-color: var(--p2); }
.page-platform .faq-item.active { border-color: var(--purple); box-shadow: 0 2px 12px rgba(123,45,254,0.12); }
.page-platform .faq-question {
    padding: 20px 28px; font-weight: 600; font-size: 15px;
    cursor: pointer; display: flex; justify-content: space-between; align-items: center;
    color: var(--text); gap: 16px;
}
.page-platform .faq-question:hover { color: var(--purple); }
.page-platform .faq-answer { padding: 0 28px 20px; font-size: 14px; color: var(--text2); line-height: 1.8; display: none; }
.page-platform .faq-item.active .faq-answer { display: block; }
.page-platform .faq-toggle { color: var(--text3); font-size: 12px; transition: all 0.3s; flex-shrink: 0; }
.page-platform .faq-item.active .faq-toggle { transform: rotate(180deg); color: var(--purple); }

/* ===== 文章 ===== */
.page-platform .section-articles {
    padding: 0 0 80px; position: relative; overflow: hidden;
    background: #f0edfb;
}
.page-platform .section-articles::before {
    content: ''; position: absolute;
    width: 500px; height: 500px; border-radius: 50%;
    top: 20%; left: -5%;
    background: radial-gradient(circle, rgba(123,45,254,0.25) 0%, rgba(123,45,254,0.08) 40%, transparent 65%);
    animation: plat-soft-float-2 20s ease-in-out infinite;
}
@keyframes plat-soft-float-2 {
    0%,100% { transform: translate(0, 0); }
    50% { transform: translate(40px, -30px); }
}
.page-platform .section-articles::after { display: none; }
.page-platform .section-articles > .container-v1 { position: relative; z-index: 1; }
.page-platform .articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.page-platform .article-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 16px; overflow: hidden; transition: all 0.3s;
    display: block;
}
.page-platform .article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.page-platform .article-cover {
    height: 160px; background: var(--grad);
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 36px;
}
.page-platform .article-body { padding: 18px; }
.page-platform .article-tag {
    display: inline-block; background: var(--s2); color: var(--purple);
    font-size: 11px; font-weight: 600; padding: 3px 10px;
    border-radius: 6px; margin-bottom: 8px;
}
.page-platform .article-body h3 { font-size: 15px; font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
.page-platform .article-body p { font-size: 12px; color: var(--text2); line-height: 1.6;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.page-platform .article-meta { display: flex; justify-content: space-between; margin-top: 12px; font-size: 11px; color: var(--text3); }

/* ===== CTA ===== */
body.page-platform .cta-banner {
    max-width: none; margin: 0;
    padding: 80px 0; text-align: center;
    position: relative; overflow: hidden;
    background: linear-gradient(135deg, rgba(123,45,254,0.15) 0%, rgba(123,45,254,0.08) 50%, rgba(37,99,235,0.1) 100%);
}
.page-platform .cta-banner::before {
    content: ''; position: absolute;
    width: 300px; height: 300px; border-radius: 50%;
    top: -80px; right: -30px;
    background: radial-gradient(circle, rgba(123,45,254,0.2) 0%, transparent 65%);
    animation: plat-rev-drift 16s ease-in-out infinite;
}
.page-platform .cta-banner::after {
    content: ''; position: absolute;
    width: 250px; height: 250px; border-radius: 50%;
    bottom: -80px; left: 5%;
    background: radial-gradient(circle, rgba(5,150,105,0.15) 0%, transparent 60%);
    animation: plat-rev-drift-2 20s ease-in-out infinite;
}
.page-platform .cta-banner > .container-v1 { position: relative; z-index: 2; }
.page-platform .cta-banner h2 { font-size: 34px; font-weight: 800; margin-bottom: 14px; color: var(--text); }
.page-platform .cta-banner p { font-size: 16px; color: var(--text2); margin-bottom: 32px; }

.page-platform .btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 24px; border-radius: 10px;
    font-size: 13px; font-weight: 700; border: none; cursor: pointer;
    transition: all 0.2s; white-space: nowrap; text-decoration: none;
}
body.page-platform .btn-primary {
    background: var(--grad) !important; color: white !important;
    border: none !important;
    box-shadow: 0 2px 10px rgba(109,40,217,0.22) !important;
}
body.page-platform .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(109,40,217,0.3) !important; color: white !important; border-color: transparent !important; }
body.page-platform .btn-shine {
    position: relative; overflow: hidden;
    padding: 16px 40px !important; font-size: 16px !important;
    box-shadow: 0 4px 20px rgba(123,45,254,0.3) !important;
}
body.page-platform .btn-shine:hover { box-shadow: 0 8px 30px rgba(123,45,254,0.4) !important; }
.page-platform .btn-shine::after {
    content: ''; position: absolute; top: 0; left: -100%;
    width: 60%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
    animation: plat-btn-shine 4s ease-in-out infinite;
}
@keyframes plat-btn-shine {
    0%,100% { left: -100%; }
    50% { left: 150%; }
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
}
@media (max-width: 768px) {
    /* Hero */
    .plat-hero-inner { padding: 20px 16px; }
    .plat-title { font-size: 26px; }
    .plat-badge { margin: -20px -16px 10px; padding: 10px 16px; font-size: 13px; border-radius: 0; display: flex; }
    .plat-breadcrumb { padding: 10px 0 0; font-size: 12px; }
    .plat-hero .trust-badges {
        display: flex; justify-content: space-between;
        gap: 8px; flex-wrap: nowrap;
    }
    .plat-hero .t-item {
        flex: 1; flex-direction: column;
        align-items: center; text-align: center; gap: 4px;
    }
    .plat-hero .t-ico { width: 36px; height: 36px; border-radius: 50%; }
    .plat-hero .t-item strong { font-size: 12px; }
    .plat-hero .t-item span { font-size: 10px; }

    /* 商品区 */
    .page-platform .plat-section { padding: 24px 16px 36px; }
    .plat-filter-panel { margin-bottom: 14px; }
    .plat-filter-tags { padding: 10px 12px; gap: 6px; }
    .plat-filter-tag { padding: 5px 12px; font-size: 12px; }
    .plat-filter-tags-spec { padding: 8px 12px; }
    .plat-filter-label { font-size: 11px; }
    .page-platform .product-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .page-platform .product-card { padding: 12px; }
    .page-platform .price-num { font-size: 22px; }

    /* 简介 */
    .plat-intro-wrap { padding: 0 16px 16px; }
    .plat-intro-wrap .intro-card { flex-direction: column; gap: 16px; padding: 20px; }
    .plat-intro-wrap .intro-icon { width: 44px; height: 44px; font-size: 22px; border-radius: 10px; }
    .plat-intro-wrap .intro-body h2 { font-size: 16px; }
    .plat-intro-wrap .intro-body p { font-size: 13px; margin-bottom: 12px; }
    .plat-intro-wrap .intro-stats { gap: 20px; }
    .plat-intro-wrap .intro-stat strong { font-size: 18px; }

    /* 各版块 */
    .page-platform .container-v1 { padding: 0 16px; }
    .page-platform .section-steps, .page-platform .section-why, .page-platform .section-reviews, .page-platform .section-faq, .page-platform .section-articles { padding: 50px 0; }
    .page-platform .section-header { margin-bottom: 32px; }
    .page-platform .section-header h2 { font-size: 22px; }
    .page-platform .section-header p { font-size: 13px; }
    .page-platform .timeline {
        display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px 8px; padding: 0;
    }
    .page-platform .timeline::before, .page-platform .timeline::after { display: none; }
    .page-platform .timeline-dot { width: 48px; height: 48px; font-size: 18px; margin-bottom: 10px; }
    .page-platform .timeline-dot::after { inset: -4px; }
    .page-platform .timeline-step { position: relative; }
    .page-platform .timeline-step h3 { font-size: 14px; margin-bottom: 2px; }
    .page-platform .timeline-step p { font-size: 12px; }
    /* Z字形：Step3放右边，Step4放左边 */
    .page-platform .timeline-step:nth-child(3) { order: 4; }
    .page-platform .timeline-step:nth-child(4) { order: 3; }
    /* 序号角标 */
    .page-platform .timeline-step .timeline-dot::before {
        content: ''; position: absolute; top: -4px; right: -4px;
        width: 20px; height: 20px; border-radius: 50%;
        background: var(--grad); color: #fff; font-size: 11px; font-weight: 800;
        display: flex; align-items: center; justify-content: center; z-index: 3;
    }
    .page-platform .timeline-step:nth-child(1) .timeline-dot::before { content: '1'; }
    .page-platform .timeline-step:nth-child(2) .timeline-dot::before { content: '2'; }
    .page-platform .timeline-step:nth-child(3) .timeline-dot::before { content: '3'; }
    .page-platform .timeline-step:nth-child(4) .timeline-dot::before { content: '4'; }
    /* 箭头：Step1 → Step2 */
    .page-platform .timeline-step:nth-child(1)::after {
        content: '\f061'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
        position: absolute; right: -12px; top: 22px;
        color: var(--purple); font-size: 14px; opacity: 0.5; z-index: 3;
    }
    /* 箭头：Step2 ↓ Step3 */
    .page-platform .timeline-step:nth-child(2)::after {
        content: '\f063'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
        position: absolute; bottom: -14px; left: 50%; transform: translateX(-50%);
        color: var(--purple); font-size: 14px; opacity: 0.5; z-index: 3;
    }
    /* 箭头：Step3 ← Step4（Z字形） */
    .page-platform .timeline-step:nth-child(3)::after {
        content: '\f060'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
        position: absolute; left: -12px; top: 22px;
        color: var(--purple); font-size: 14px; opacity: 0.5; z-index: 3;
    }
    .page-platform .why-rows { grid-template-columns: 1fr; }
    .page-platform .why-row, .page-platform .why-row:nth-child(even) { flex-direction: column; gap: 12px; padding: 22px 20px; }
    .page-platform .why-row-icon { width: 48px; height: 48px; font-size: 20px; }
    .page-platform .faq-list { grid-template-columns: 1fr; }
    .page-platform .faq-question { padding: 16px 16px; font-size: 14px; }
    .page-platform .faq-answer { padding: 0 16px 16px; }
    .page-platform .articles-grid { grid-template-columns: 1fr; }
    .page-platform .review-card { flex: 0 0 300px; max-width: 300px; }
    .page-platform .cta-banner { padding: 50px 0; }
    .page-platform .cta-banner h2 { font-size: 24px; }
    .page-platform .cta-banner p { font-size: 14px; }
    .page-platform .btn-shine { padding: 14px 32px !important; font-size: 14px !important; }
}

@media (max-width: 480px) {
    .plat-breadcrumb .sep { margin: 0 5px; }
    .plat-breadcrumb { font-size: 11px; }
    .plat-title { font-size: 22px; }

    /* 商品卡片紧凑布局（和首页 480px 一致） */
    .page-platform .product-grid { grid-template-columns: repeat(2, 1fr); }
    .page-platform .product-card { padding: 8px; }
    body.page-platform .card-top { gap: 5px; margin-bottom: 6px; }
    .page-platform .card-icon { width: 28px; height: 28px; border-radius: 6px; font-size: 14px; }
    .page-platform .card-icon img { width: 18px !important; height: 18px !important; }
    .page-platform .card-name { font-size: 10px; word-break: break-word; line-height: 1.3; }
    .page-platform .card-type { font-size: 9px; }
    body.page-platform .card-price { margin-bottom: 6px; }
    body.page-platform .card-price .price-num { font-size: 16px; }
    body.page-platform .card-price .price-sym { font-size: 10px; }
    body.page-platform .card-price .price-unit { font-size: 9px; }
    body.page-platform .card-footer { flex-direction: column; gap: 4px; align-items: stretch; margin-top: 0; }
    body.page-platform .card-stock { font-size: 9px; }
    body.page-platform .card-buy { font-size: 10px; padding: 4px 8px; width: 100%; text-align: center; }
    body.page-platform .card-divider { margin-bottom: 6px; }

    /* 简介 */
    .plat-intro-wrap .intro-stats { gap: 16px; }
    .plat-intro-wrap .intro-stat strong { font-size: 16px; }

    /* 其他区块 */
    .page-platform .review-card { flex: 0 0 280px; max-width: 280px; padding: 22px; }
    .page-platform .section-header h2 { font-size: 20px; }
}