/* ========================================
   米醋电子工作室 - 西门子嵌入式宣发页
   ======================================== */

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

:root{
    --c-bg:     #fafaf9;
    --c-surface:#ffffff;
    --c-dark:   #1a1a1a;
    --c-text:   #333;
    --c-muted:  #888;
    --c-border: #e5e5e5;
    --c-accent: #e85d3a;       /* 暖橙红，不是 AI 常用的紫蓝渐变 */
    --c-accent2:#2b6cb0;       /* 沉稳蓝 */
    --c-green:  #38a169;
    --c-gold:   #d69e2e;
    --ff: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --wrap: 820px;
}

body{
    font-family: var(--ff);
    line-height: 1.75;
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
}

.wrap{
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 24px;
}

h2{
    font-size: 28px;
    font-weight: 900;
    letter-spacing: -0.02em;
    color: var(--c-dark);
    margin-bottom: 12px;
}

/* ===== HERO ===== */
.hero{
    background: var(--c-dark);
    color: #fff;
    padding: 100px 0 80px;
    text-align: center;
}

.hero-eyebrow{
    font-size: 13px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255,255,255,.45);
    margin-bottom: 40px;
}

.hero-h1{
    font-size: clamp(36px, 7vw, 60px);
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 28px;
}

.hero-h1 .dim{
    color: rgba(255,255,255,.35);
}

.hero-sub{
    font-size: 17px;
    color: rgba(255,255,255,.7);
    line-height: 1.8;
    max-width: 520px;
    margin: 0 auto 40px;
}

.hero-actions{
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.btn-main{
    display: inline-block;
    padding: 14px 36px;
    background: var(--c-accent);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 700;
    transition: background .2s, transform .15s;
}
.btn-main:hover{
    background: #d04e2e;
    transform: translateY(-1px);
}
.btn-main.lg{
    padding: 16px 44px;
    font-size: 18px;
}

.btn-ghost{
    display: inline-block;
    padding: 14px 36px;
    color: rgba(255,255,255,.8);
    text-decoration: none;
    border: 1px solid rgba(255,255,255,.25);
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    transition: border-color .2s, color .2s;
}
.btn-ghost:hover{
    border-color: rgba(255,255,255,.6);
    color: #fff;
}
.btn-ghost.lg{
    padding: 16px 44px;
    font-size: 18px;
}

.hero-note{
    font-size: 14px;
    color: rgba(255,255,255,.4);
}

/* ===== PAIN POINTS ===== */
.pain{
    padding: 80px 0 60px;
}

.pain-block{
    margin-bottom: 48px;
    max-width: 640px;
}

.pain-q{
    font-size: 22px;
    font-weight: 900;
    color: var(--c-dark);
    margin-bottom: 16px;
    padding-left: 16px;
    border-left: 4px solid var(--c-accent);
}

.pain-block p{
    font-size: 16px;
    color: #555;
    margin-bottom: 12px;
}

.pain-block strong{
    color: var(--c-dark);
    font-weight: 700;
}

/* ===== TRANSITION ===== */
.transition{
    padding: 56px 0;
    text-align: center;
    background: var(--c-dark);
    color: #fff;
}

.transition h2{
    color: #fff;
    font-size: 26px;
    margin: 0;
    letter-spacing: 0.02em;
}

/* ===== CORE SELLING POINTS ===== */
.core{
    padding: 72px 0;
    background: var(--c-surface);
}

.core-grid{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px 48px;
}

.core-item{
    padding-top: 4px;
}

.core-num{
    font-size: 13px;
    font-weight: 700;
    color: var(--c-accent);
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.core-item h3{
    font-size: 19px;
    font-weight: 800;
    color: var(--c-dark);
    margin-bottom: 10px;
}

.core-item p{
    font-size: 15px;
    color: #666;
    line-height: 1.75;
}

/* ===== ROADMAP ===== */
.roadmap{
    padding: 72px 0;
    background: var(--c-bg);
}

.roadmap h2{
    text-align: center;
    margin-bottom: 48px;
}

.road-track{
    max-width: 560px;
    margin: 0 auto;
}

.road-node{
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.road-dot{
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 3px solid var(--c-border);
    background: var(--c-bg);
    margin-top: 6px;
    flex-shrink: 0;
}

.road-node.done .road-dot{
    background: var(--c-green);
    border-color: var(--c-green);
}
.road-node.now .road-dot{
    background: var(--c-accent);
    border-color: var(--c-accent);
    box-shadow: 0 0 0 4px rgba(232,93,58,.18);
}
.road-node.next .road-dot{
    background: var(--c-gold);
    border-color: var(--c-gold);
}

.road-tag{
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 3px 10px;
    border-radius: 3px;
    margin-bottom: 6px;
}

.tag-done{ background: #e6f7ed; color: var(--c-green); }
.tag-now{  background: #fef0ec; color: var(--c-accent); }
.tag-next{ background: #fefce8; color: #92400e; }

.road-body h3{
    font-size: 19px;
    font-weight: 800;
    color: var(--c-dark);
    margin-bottom: 6px;
}

.road-body p{
    font-size: 14px;
    color: #777;
    line-height: 1.7;
}

.road-line{
    padding: 4px 0 4px 6px;
    margin-left: 0;
    border-left: 2px dashed var(--c-border);
    margin-left: 5px; /* center under dot */
    padding-left: 28px;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.road-label{
    font-size: 12px;
    font-weight: 600;
    color: var(--c-muted);
    background: var(--c-bg);
    padding: 2px 10px;
    border: 1px solid var(--c-border);
    border-radius: 3px;
}

/* ===== WHAT YOU GET ===== */
.included{
    padding: 72px 0;
    background: var(--c-surface);
}

.included h2{
    text-align: center;
    margin-bottom: 40px;
}

.inc-grid{
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
}

.inc-item{
    padding: 24px;
    border: 1px solid var(--c-border);
    border-radius: 8px;
    transition: border-color .2s;
}

.inc-item:hover{
    border-color: var(--c-accent);
}

.inc-label{
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--c-accent);
    margin-bottom: 10px;
}

.inc-item p{
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

/* ===== PRICING ===== */
.pricing{
    padding: 72px 0;
    background: var(--c-bg);
    text-align: center;
}

.pricing h2{
    margin-bottom: 4px;
}

.pricing-sub{
    color: var(--c-muted);
    font-size: 15px;
    margin-bottom: 40px;
}

.price-row{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 600px;
    margin: 0 auto 20px;
    text-align: center;
}

.price-box{
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: 10px;
    padding: 36px 28px 32px;
    position: relative;
    transition: box-shadow .2s, border-color .2s;
}

.price-box:hover{
    box-shadow: 0 8px 30px rgba(0,0,0,.07);
}

.price-box.hot{
    border-color: var(--c-accent);
    box-shadow: 0 8px 30px rgba(232,93,58,.10);
}

.price-flag{
    position: absolute;
    top: -11px;
    right: 20px;
    background: var(--c-accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 3px 14px;
    border-radius: 3px;
}

.price-name{
    font-size: 15px;
    font-weight: 600;
    color: var(--c-dark);
    margin-bottom: 16px;
}

.price-val{
    font-size: 52px;
    font-weight: 900;
    color: var(--c-dark);
    line-height: 1;
    margin-bottom: 12px;
}

.price-val small{
    font-size: 22px;
    font-weight: 700;
}

.price-val span{
    font-size: 16px;
    font-weight: 500;
    color: var(--c-muted);
}

.price-desc{
    font-size: 14px;
    color: var(--c-muted);
    margin-bottom: 24px;
}

.btn-buy{
    display: inline-block;
    width: 100%;
    padding: 12px 0;
    background: var(--c-bg);
    color: var(--c-dark);
    text-decoration: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    border: 1px solid var(--c-border);
    transition: all .2s;
}

.btn-buy:hover{
    background: var(--c-dark);
    color: #fff;
    border-color: var(--c-dark);
}

.btn-buy.hot-btn{
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}

.btn-buy.hot-btn:hover{
    background: #d04e2e;
    border-color: #d04e2e;
}

.price-fine{
    font-size: 13px;
    color: var(--c-muted);
}

/* ===== DISCLAIMER ===== */
.disclaimer{
    padding: 60px 0;
    background: var(--c-surface);
}

.disc-card{
    max-width: 640px;
    margin: 0 auto;
    padding: 40px;
    background: var(--c-bg);
    border-radius: 10px;
    border: 1px solid var(--c-border);
}

.disc-card h3{
    font-size: 22px;
    font-weight: 800;
    color: var(--c-dark);
    margin-bottom: 20px;
}

.disc-lead{
    font-size: 15px;
    color: #666;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--c-border);
}

.disc-list{
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 28px;
}

.disc-point{
    font-size: 15px;
    line-height: 1.7;
}

.disc-point strong{
    display: block;
    color: var(--c-dark);
    margin-bottom: 2px;
}

.disc-point span{
    color: #777;
    font-size: 14px;
}

.btn-trial{
    display: inline-block;
    padding: 12px 28px;
    background: var(--c-dark);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    transition: background .2s;
}

.btn-trial:hover{
    background: #333;
}

/* ===== FINAL CTA ===== */
.final-cta{
    padding: 80px 0;
    background: var(--c-dark);
    color: #fff;
    text-align: center;
}

.final-cta h2{
    color: #fff;
    font-size: clamp(24px, 5vw, 34px);
    line-height: 1.35;
    margin-bottom: 24px;
}

.final-prices{
    font-size: 20px;
    color: rgba(255,255,255,.6);
    margin-bottom: 32px;
}

.final-prices .sep{
    margin: 0 12px;
    opacity: .3;
}

.final-prices .highlight{
    color: var(--c-accent);
    font-weight: 700;
}

.final-actions{
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.final-fine{
    font-size: 13px;
    color: rgba(255,255,255,.35);
}

/* ===== FOOTER ===== */
.footer{
    padding: 32px 0;
    background: #111;
    color: rgba(255,255,255,.4);
    font-size: 13px;
}

.footer-inner{
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-name{
    font-weight: 700;
    color: rgba(255,255,255,.6);
    margin-bottom: 2px;
}

.footer-slogan{
    font-size: 12px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px){
    .hero{
        padding: 72px 0 60px;
    }
    .hero-h1{
        font-size: 34px;
    }
    .hero-sub{
        font-size: 15px;
    }
    .hero-sub br{
        display: none;
    }
    .core-grid{
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .inc-grid{
        grid-template-columns: 1fr;
    }
    .price-row{
        grid-template-columns: 1fr;
        max-width: 340px;
    }
    .road-track{
        padding-left: 0;
    }
    .disc-card{
        padding: 28px 20px;
    }
    h2{
        font-size: 24px;
    }
}

@media (max-width: 480px){
    .hero-actions{
        flex-direction: column;
        align-items: center;
    }
    .btn-main, .btn-ghost{
        width: 100%;
        text-align: center;
    }
    .btn-main.lg, .btn-ghost.lg{
        width: 100%;
        text-align: center;
    }
    .final-actions{
        flex-direction: column;
        align-items: center;
    }
    .final-actions .btn-main,
    .final-actions .btn-ghost{
        width: 100%;
    }
    .final-prices{
        font-size: 17px;
    }
    .final-cta h2 br{
        display: none;
    }
}