/* ============================================================
   ChartCompass — 深色交易风设计系统
   底色: 石墨黑 · 主色: 翠绿 #10b981 · 强调: 琥珀 #fbbf24
   ============================================================ */

:root {
    --bg: #0c0a09;
    --bg-alt: #121110;
    --card: #161412;
    --card-2: #1c1917;
    --border: #292524;
    --border-light: #3a3532;
    --text: #fafaf9;
    --text-muted: #a8a29e;
    /* #928a80: 实测在 #0c0a09/#121110/#161412 三种底色上对比度 5.4–5.8，达 WCAG AA */
    --text-dim: #928a80;
    --green: #10b981;
    --green-bright: #34d399;
    --green-dim: rgba(16, 185, 129, .12);
    --red: #ef4444;
    --red-dim: rgba(239, 68, 68, .12);
    --amber: #fbbf24;
    --amber-dim: rgba(251, 191, 36, .12);
    --radius: 16px;
    --radius-sm: 10px;
    --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; }

.text-green { color: var(--green); }
.text-muted { color: var(--text-dim); }

/* ============ 按钮 ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 700;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    white-space: nowrap;
}
.btn--primary {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #04110c;
    box-shadow: 0 0 0 1px rgba(52, 211, 153, .4), 0 8px 24px -8px rgba(16, 185, 129, .55);
}
.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 0 1px rgba(52, 211, 153, .6), 0 14px 32px -8px rgba(16, 185, 129, .7);
}
.btn--outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border-light);
    box-shadow: none;
}
.btn--outline:hover { border-color: var(--green); color: var(--green-bright); }
.btn--sm { padding: 10px 20px; font-size: 14px; }
.btn--lg { padding: 17px 36px; font-size: 17px; }
.btn--block { width: 100%; }
.btn__arrow { transition: transform .15s ease; }
.btn:hover .btn__arrow { transform: translateX(3px); }

/* ============ 公告条 ============ */
.promo-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 9px 16px;
    background: linear-gradient(90deg, rgba(251, 191, 36, .10), rgba(251, 191, 36, .18), rgba(251, 191, 36, .10));
    border-bottom: 1px solid rgba(251, 191, 36, .25);
    font-size: 13.5px;
    color: var(--text-muted);
    transition: background .2s ease;
}
.promo-bar:hover { background: rgba(251, 191, 36, .16); }
.promo-bar strong { color: var(--amber); font-weight: 700; }
.promo-bar__badge {
    background: var(--amber);
    color: #1c1300;
    font-size: 11px;
    font-weight: 800;
    padding: 2px 9px;
    border-radius: 999px;
    letter-spacing: .05em;
    flex: none;
}
.promo-bar__arrow { color: var(--amber); font-weight: 700; }

/* ============ 导航 ============ */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(12, 10, 9, .82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color .25s ease;
}
.nav.is-scrolled { border-bottom-color: var(--border); }
.nav__inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 40px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; letter-spacing: -.01em; }
.brand__mark { width: 22px; height: 22px; color: var(--green); display: inline-flex; }
.brand__mark svg { width: 100%; height: 100%; }
.nav__links { display: flex; gap: 30px; margin: 0 auto; }
.nav__links a { font-size: 14.5px; font-weight: 500; color: var(--text-muted); transition: color .15s ease; }
.nav__links a:hover { color: var(--text); }
.nav__right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.lang-switch { display: flex; background: var(--card); border: 1px solid var(--border); border-radius: 999px; padding: 3px; gap: 2px; }
.lang-switch button { background: none; border: none; color: var(--text-dim); font-size: 12.5px; font-weight: 700; padding: 5px 12px; border-radius: 999px; cursor: pointer; transition: color .15s ease, background .15s ease; }
.lang-switch button:hover { color: var(--text); }
.lang-switch button.is-active { background: var(--green-dim); color: var(--green-bright); }
.lang-switch--mobile { align-self: flex-start; margin: 8px 0; }
.nav__burger { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; margin-left: auto; }
.nav__burger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav__mobile { display: none; flex-direction: column; gap: 4px; padding: 12px 24px 20px; border-top: 1px solid var(--border); }
.nav__mobile a { padding: 10px 0; font-size: 15px; color: var(--text-muted); }
.nav__mobile a:hover { color: var(--text); }
.nav__mobile .btn { margin-top: 8px; color: #04110c; }
.nav__mobile.is-open { display: flex; }

/* ============ Hero ============ */
.hero {
    position: relative;
    text-align: center;
    padding: 100px 24px 90px;
    max-width: 1140px;
    margin: 0 auto;
}
.hero__glow {
    position: absolute;
    top: -120px;
    left: 50%;
    transform: translateX(-50%);
    width: min(900px, 100%);
    height: 600px;
    background: radial-gradient(ellipse at center, rgba(16, 185, 129, .14), transparent 65%);
    pointer-events: none;
}
.eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .08em;
    color: var(--green-bright);
    background: var(--green-dim);
    border: 1px solid rgba(16, 185, 129, .3);
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 28px;
}
.hero h1 {
    font-size: clamp(40px, 7vw, 72px);
    font-weight: 900;
    line-height: 1.12;
    letter-spacing: -.03em;
    margin-bottom: 24px;
}
.hero__sub {
    font-size: clamp(16px, 2.2vw, 19px);
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto 36px;
}
.hero__cta { display: flex; justify-content: center; gap: 14px; margin-bottom: 18px; }

/* Hero CTA 下方信任信号行 */
.hero__trust {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 20px;
    margin: 0 auto 62px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text-muted);
}
.hero__trust span::before { content: "✓ "; color: var(--green-bright); font-weight: 700; }

/* TradingView 风格实时演示（浅色终端 · JS 生成 SVG · 循环动画） */
.hero__demo { position: relative; max-width: 900px; margin: 0 auto; }
.tv-demo {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .8), 0 0 60px -30px rgba(16, 185, 129, .35);
}
.tv-demo__topbar {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 10px 14px;
    background: #f4f4f5;
    border-bottom: 1px solid #e4e4e7;
}
.dot { width: 11px; height: 11px; border-radius: 50%; flex: none; }
.dot--r { background: #f87171; } .dot--y { background: #fbbf24; } .dot--g { background: #34d399; }
.tv-demo__live {
    margin: 0 auto;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #52525b;
    background: #e4e4e7;
    padding: 3px 16px;
    border-radius: 999px;
}
.tv-demo__stage { display: grid; grid-template-columns: 1fr 148px; }
.tv-demo__main { position: relative; }
.tv-chart { display: block; width: 100%; height: auto; }
.tv-demo__legend {
    position: absolute;
    top: 8px; left: 12px;
    z-index: 4;
    display: flex;
    gap: 10px;
    font-size: 10.5px;
    font-weight: 600;
    color: #71717a;
    white-space: nowrap;
    pointer-events: none;
}
.lg-val--red { color: #f23645; } .lg-val--org { color: #ff9800; } .lg-val--amb { color: #d97706; }
.tv-demo__overlay {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    pointer-events: none;
    padding-bottom: 9%;
}
.tv-demo__brand {
    font-size: clamp(20px, 3.8vw, 42px);
    font-weight: 900;
    letter-spacing: .06em;
    color: #18181b;
    text-shadow: 0 0 18px rgba(255, 255, 255, .95), 0 0 40px rgba(255, 255, 255, .7);
}
.tv-demo__tag {
    font-size: clamp(11px, 1.8vw, 17px);
    color: #3f3f46;
    font-weight: 500;
    text-shadow: 0 0 12px rgba(255, 255, 255, .95);
}
.tv-demo__watchlist {
    border-left: 1px solid #e4e4e7;
    background: #fafafa;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.wl-head { font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: #a1a1aa; padding: 4px 2px 8px; }
.wl-row { display: flex; align-items: center; gap: 8px; padding: 7px 6px; border-radius: 8px; }
.wl-ic { width: 22px; height: 22px; border-radius: 50%; color: #fff; font-size: 11px; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; flex: none; }
.wl-sym { font-size: 12px; font-weight: 700; color: #27272a; }
.wl-chg { margin-left: auto; font-size: 11px; font-weight: 600; color: #a1a1aa; }
.wl-chg.up { color: #089981; } .wl-chg.dn { color: #f23645; }
.wl-row--ghost { height: 22px; border-radius: 8px; background: #f4f4f5; margin-top: 4px; }

/* SVG 内文本与线条 */
.ax-lbl { font-size: 10px; fill: #a1a1aa; font-weight: 500; font-family: var(--font); }
.ax-lbl--b { fill: #52525b; font-weight: 700; }
.mk-lbl { font-size: 9px; font-weight: 700; font-family: var(--font); }
.mk-lbl--red { fill: #f23645; } .mk-lbl--dark { fill: #b91c1c; }
.sig-lbl { font-size: 12px; font-weight: 700; fill: #fff; font-family: var(--font); }
.ptag-lbl { font-size: 10.5px; font-weight: 700; fill: #fff; font-family: var(--font); }
.ln { fill: none; stroke-width: 2; stroke-linejoin: round; }
.ln--ma { stroke: #ff9800; }
.ln--trail { stroke: #f23645; stroke-width: 1.8; }
.ln--trend { stroke: #089981; stroke-width: 2.4; }

/* 演示动画：默认静态全显；.anim 时按时间轴播放（12s 一轮） */
@keyframes fadeIn { to { opacity: 1; } }
.tv-demo.anim .cnd { opacity: 0; animation: cndIn .4s ease forwards; }
@keyframes cndIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.tv-demo.anim .ln { stroke-dasharray: 1; stroke-dashoffset: 1; animation: lnDraw 3.8s ease .4s forwards; }
@keyframes lnDraw { to { stroke-dashoffset: 0; } }
.tv-demo.anim .g-cur { opacity: 0; animation: fadeIn .5s ease 4.3s forwards; }
.tv-demo.anim .g-extras { opacity: 0; animation: fadeIn .6s ease 3s forwards; }
.tv-demo.anim .g-signal {
    opacity: 0;
    transform-box: fill-box;
    transform-origin: center;
    animation: sigPop .45s cubic-bezier(.5, 1.8, .6, 1) 4.7s forwards;
}
@keyframes sigPop { from { opacity: 0; transform: scale(.4); } to { opacity: 1; transform: scale(1); } }
.tv-demo.anim .ptag { opacity: 0; animation: fadeIn .4s ease forwards; }
.tv-demo.anim .ptag:nth-child(1) { animation-delay: 5s; }
.tv-demo.anim .ptag:nth-child(2) { animation-delay: 5.12s; }
.tv-demo.anim .ptag:nth-child(3) { animation-delay: 5.24s; }
.tv-demo.anim .ptag:nth-child(4) { animation-delay: 5.36s; }
.tv-demo.anim .ptag:nth-child(5) { animation-delay: 5.48s; }
.tv-demo.anim .tv-demo__overlay { opacity: 0; animation: fadeIn 1s ease 1.2s forwards; }

/* ============ 通用 Section ============ */
.section {
    padding: 110px 24px;
    max-width: 1140px;
    margin: 0 auto;
}
.section--alt { max-width: none; background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section--alt > * { max-width: 1092px; margin-left: auto; margin-right: auto; }
.section__kicker {
    text-align: center;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--green-bright);
    margin-bottom: 16px;
}
.section__title {
    text-align: center;
    font-size: clamp(30px, 4.6vw, 46px);
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -.02em;
    margin-bottom: 18px;
}
.section__sub {
    text-align: center;
    color: var(--text-muted);
    font-size: 17px;
    max-width: 520px;
    margin: 0 auto 56px;
}
.section__closer {
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    margin: 56px auto 20px;
}
.section__cta { text-align: center; }
.placeholder-note { font-size: 12px; color: var(--text-dim); }

/* ============ 网格与卡片 ============ */
.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--border-light); transform: translateY(-3px); }
.card__num {
    display: inline-block;
    font-size: 13px;
    font-weight: 800;
    color: var(--text-dim);
    letter-spacing: .1em;
    margin-bottom: 10px;
}
.card__num--green { color: var(--green-bright); }
.card h3 { font-size: 19px; font-weight: 700; line-height: 1.4; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--text-muted); }

/* 卡片内小可视化 */
.card__visual {
    height: 110px;
    border-radius: var(--radius-sm);
    background: var(--card-2);
    border: 1px solid var(--border);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}
.viz-guess { width: 100%; height: 100%; position: relative; display: flex; align-items: center; justify-content: center; }
.viz-guess svg { position: absolute; inset: 0; width: 100%; height: 100%; padding: 18px; }
.viz-guess__q {
    position: relative;
    z-index: 1;
    font-size: 26px;
    font-weight: 900;
    color: var(--text-dim);
    background: var(--card);
    border: 1px solid var(--border-light);
    width: 44px; height: 44px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}
.line-muted { fill: none; stroke: #78716c; stroke-width: 2; opacity: .6; }
.line-green { fill: none; stroke: #10b981; stroke-width: 2.5; }
.viz-conflict, .viz-updown { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.chip {
    font-size: 12px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid;
}
.chip--buy { color: var(--green-bright); background: var(--green-dim); border-color: rgba(16,185,129,.35); }
.chip--sell { color: #fca5a5; background: var(--red-dim); border-color: rgba(239,68,68,.35); }
.chip--wait { color: var(--text-dim); background: rgba(255,255,255,.03); border-color: var(--border-light); }
.chip--muted { color: var(--text-dim); background: rgba(255,255,255,.03); border-color: var(--border); }
.chip--lg { font-size: 14px; padding: 9px 22px; }
.viz-zero span {
    font-size: 22px;
    font-weight: 900;
    color: var(--red);
    text-decoration: line-through;
    text-decoration-thickness: 3px;
    opacity: .85;
}
.viz-zones { width: 100%; height: 100%; display: flex; flex-direction: column; }
.viz-zones svg { flex: 1; width: 100%; padding: 4px 14px; min-height: 0; }
.viz-zones__band {
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .14em;
    padding: 5px 14px;
}
.viz-zones__band--sell { background: rgba(239,68,68,.14); color: #fca5a5; border-bottom: 1px dashed rgba(239,68,68,.4); }
.viz-zones__band--buy { background: rgba(16,185,129,.14); color: #6ee7b7; border-top: 1px dashed rgba(16,185,129,.4); }
.viz-flow { display: flex; align-items: center; gap: 6px; flex-wrap: nowrap; }
.viz-flow .chip { white-space: nowrap; font-size: 10.5px; padding: 5px 10px; }
.viz-flow__line { width: 14px; height: 1px; background: var(--border-light); flex: none; }

/* ============ 评价 ============ */
.testimonial {
    max-width: 720px;
    margin: 0 auto 36px;
    text-align: center;
}
.testimonial__quote {
    font-size: clamp(17px, 2.4vw, 21px);
    font-weight: 500;
    line-height: 1.75;
    color: var(--text);
    margin-bottom: 28px;
    min-height: 110px;
}
.testimonial__who { display: flex; align-items: center; justify-content: center; gap: 14px; text-align: left; }
.avatar {
    width: 46px; height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--green), #047857);
    color: #04110c;
    font-weight: 800;
    font-size: 17px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: none;
}
.testimonial__name { font-weight: 700; font-size: 15px; }
.testimonial__role { font-size: 13px; color: var(--text-dim); }
.testimonial__picker {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}
.picker-btn {
    display: flex;
    align-items: center;
    gap: 9px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 7px 16px 7px 8px;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
    transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.picker-btn .avatar { width: 28px; height: 28px; font-size: 12px; }
.picker-btn:hover { border-color: var(--border-light); color: var(--text); }
.picker-btn.is-active { border-color: var(--green); color: var(--text); background: var(--green-dim); }

/* ============ 功能矩阵 ============ */
.feat-grid { margin-bottom: 24px; }
.feat {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    transition: border-color .2s ease, transform .2s ease;
}
.feat:hover { border-color: rgba(16,185,129,.4); transform: translateY(-3px); }
.feat__icon {
    width: 42px; height: 42px;
    border-radius: 11px;
    background: var(--green-dim);
    border: 1px solid rgba(16,185,129,.3);
    color: var(--green-bright);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 18px;
}
.feat__icon svg { width: 21px; height: 21px; }
.feat h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.feat p { font-size: 14px; color: var(--text-muted); }

/* AI 加赠卡 */
.ai-card {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 30px;
    align-items: center;
    background: linear-gradient(135deg, var(--card), #1a1610);
    border: 1px solid rgba(251,191,36,.35);
    border-radius: var(--radius);
    padding: 34px;
    box-shadow: 0 0 50px -20px rgba(251,191,36,.25);
}
.ai-card__info h3 { font-size: 21px; font-weight: 800; line-height: 1.45; margin-bottom: 12px; }
.ai-card__info p { color: var(--text-muted); font-size: 15px; }
.ai-card__chat { display: flex; flex-direction: column; gap: 12px; }
.bubble {
    padding: 13px 18px;
    border-radius: 14px;
    font-size: 14px;
    line-height: 1.65;
}
.bubble--user {
    align-self: flex-end;
    background: var(--green-dim);
    border: 1px solid rgba(16,185,129,.3);
    color: var(--green-bright);
    border-bottom-right-radius: 4px;
    font-weight: 600;
}
.bubble--ai {
    align-self: flex-start;
    background: var(--card-2);
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-bottom-left-radius: 4px;
}

/* 徽章 */
.badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .05em;
    padding: 3px 11px;
    border-radius: 999px;
    vertical-align: middle;
}
.badge--amber { background: var(--amber-dim); color: var(--amber); border: 1px solid rgba(251,191,36,.4); }
.badge--green { background: var(--green-dim); color: var(--green-bright); border: 1px solid rgba(16,185,129,.35); }

/* ============ 步骤 ============ */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1092px;
    margin: 0 auto;
}
.step {
    position: relative;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px 26px;
}
.step__num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--green-dim);
    border: 1px solid rgba(16,185,129,.35);
    color: var(--green-bright);
    font-weight: 800;
    font-size: 14px;
    margin-bottom: 18px;
}
.step h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 14.5px; color: var(--text-muted); }

/* ============ 定价 ============ */
.section__title--price { font-size: clamp(44px, 7vw, 76px); margin-bottom: 40px; }
.section__title--price .usdt { font-size: .45em; color: var(--green-bright); font-weight: 800; vertical-align: .28em; margin-left: 4px; }

.anchor-row {
    display: grid;
    grid-template-columns: 1fr 1.15fr 1fr;
    gap: 16px;
    max-width: 860px;
    margin: 0 auto 40px;
    align-items: stretch;
}
.anchor {
    text-align: center;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 18px;
}
.anchor__label { font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 10px; }
.anchor__val { font-size: 22px; font-weight: 900; letter-spacing: -.01em; }
.anchor__val span { font-size: 13px; color: var(--text-dim); font-weight: 600; }
.anchor__note { font-size: 12.5px; color: var(--text-dim); margin-top: 6px; }
.anchor--hero {
    border-color: rgba(16,185,129,.5);
    background: linear-gradient(180deg, rgba(16,185,129,.1), var(--card));
    box-shadow: 0 0 40px -14px rgba(16,185,129,.4);
    transform: scale(1.04);
}
.anchor--hero .anchor__label { color: var(--green-bright); }
.anchor--hero .anchor__note { color: var(--text-muted); }
.anchor--red { border-color: rgba(239,68,68,.35); }
.anchor--red .anchor__val { color: var(--red); }

.price-card {
    max-width: 620px;
    margin: 0 auto;
    background: var(--card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: 36px;
    box-shadow: 0 30px 80px -30px rgba(0,0,0,.8);
}
.price-card__block {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}
.price-card__block:first-child { padding-top: 0; }
.price-card__block--bonus {
    background: var(--amber-dim);
    border: 1px solid rgba(251,191,36,.3);
    border-radius: var(--radius-sm);
    padding: 18px;
    margin: 20px 0;
}
.price-card__block--bonus .badge { margin-bottom: 10px; }
.stack-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    font-weight: 700;
    font-size: 16px;
}
.stack-head__val { font-size: 13px; color: var(--text-dim); font-weight: 600; white-space: nowrap; }
.stack-list { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.stack-list li {
    font-size: 14.5px;
    color: var(--text-muted);
    padding-left: 26px;
    position: relative;
}
.stack-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--green-bright);
    font-weight: 800;
}
.stack-sub { font-size: 13.5px; color: var(--text-dim); margin-top: 8px; }
.price-card__total { padding: 22px 0; }
.total-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 14.5px;
    color: var(--text-dim);
}
.total-row__val--strike { text-decoration: line-through; }
.total-row--final { margin-top: 10px; font-size: 17px; font-weight: 800; color: var(--text); }
.total-row--final .total-row__val { font-size: 26px; color: var(--green-bright); }
.total-row--final em { font-style: normal; font-size: 13px; color: var(--text-dim); font-weight: 600; }
.price-card .btn { margin-top: 6px; }
.price-card__note {
    text-align: center;
    font-size: 12.5px;
    color: var(--text-dim);
    margin-top: 16px;
}

/* 交付保证（风险逆转）——与退款政策逐字一致，不承诺做不到的事 */
.guarantee {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    text-align: left;
    background: var(--green-dim);
    border: 1px solid rgba(16, 185, 129, .3);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    margin-top: 18px;
}
.guarantee__icon { flex: none; width: 32px; height: 32px; color: var(--green-bright); }
.guarantee strong { display: block; font-size: 14.5px; margin-bottom: 4px; }
.guarantee p { font-size: 13.5px; color: var(--text-muted); line-height: 1.55; margin: 0; }

/* 收尾 CTA */
.final-cta__note {
    text-align: center;
    font-size: 13px;
    color: var(--text-dim);
    margin-top: 18px;
}

/* hidden 属性兜底（如评价区在拿到真实反馈前整段隐藏） */
[hidden] { display: none !important; }

/* ============ FAQ ============ */
.faq { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color .2s ease;
}
.faq-item.is-open { border-color: var(--border-light); }
.faq-item__q {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    background: none;
    border: none;
    color: var(--text);
    font-size: 15.5px;
    font-weight: 600;
    text-align: left;
    padding: 19px 22px;
    cursor: pointer;
}
.faq-item__icon {
    font-size: 20px;
    font-weight: 400;
    color: var(--text-dim);
    transition: transform .25s ease, color .2s ease;
    flex: none;
}
.faq-item.is-open .faq-item__icon { transform: rotate(45deg); color: var(--green-bright); }
.faq-item__a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
}
/* 上限要容得下窄屏中英文最长答案，否则内容被截断 */
.faq-item.is-open .faq-item__a { max-height: 480px; }
.faq-item__a p { padding: 0 22px 20px; font-size: 14.5px; color: var(--text-muted); }

/* ============ 页脚 ============ */
.footer {
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
    padding: 70px 24px 110px;
}
.footer__grid {
    max-width: 1092px;
    margin: 0 auto 50px;
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer__col { display: flex; flex-direction: column; gap: 11px; align-items: flex-start; }
.footer__col h5 { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 4px; }
.footer__col a { font-size: 14px; color: var(--text-muted); transition: color .15s ease; }
.footer__col a:hover { color: var(--text); }
.footer__tag { font-size: 13px; color: var(--text-dim); }
.footer__legal {
    max-width: 1092px;
    margin: 0 auto 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}
.footer__legal p { font-size: 12.5px; color: var(--text-dim); max-width: 760px; }
.footer__legal strong { color: var(--text-muted); }
.footer__tm { margin-top: 10px; opacity: .8; }
.footer__bottom {
    max-width: 1092px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.footer__bottom p { font-size: 13px; color: var(--text-dim); }
.pay-badges { display: flex; gap: 8px; }
.pay-badge {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 10px;
    letter-spacing: .05em;
}

/* ============ 底部吸底购买条 ============ */
.sticky-bar {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 90;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 24px;
    background: rgba(12, 10, 9, .92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid var(--border);
    transform: translateY(110%);
    transition: transform .3s ease;
}
.sticky-bar.is-visible { transform: none; }
.sticky-bar__info { display: flex; flex-direction: column; line-height: 1.35; }
.sticky-bar__name { font-weight: 800; font-size: 14.5px; }
.sticky-bar__price { font-size: 12.5px; color: var(--text-dim); }

/* ============ 滚动入场动画（无 JS 时默认全部可见） ============ */
.reveal { transition: opacity .6s ease, transform .6s ease; }
html.js .reveal {
    opacity: 0;
    transform: translateY(24px);
}
html.js .reveal.in-view { opacity: 1; transform: none; }
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .3s; }
.delay-4 { transition-delay: .4s; }
@media (prefers-reduced-motion: reduce) {
    html.js .reveal { opacity: 1; transform: none; transition: none; }
    .spinner { animation: none; }
    .tv-demo.anim .cnd,
    .tv-demo.anim .ln,
    .tv-demo.anim .g-cur,
    .tv-demo.anim .g-extras,
    .tv-demo.anim .g-signal,
    .tv-demo.anim .ptag,
    .tv-demo.anim .tv-demo__overlay { animation: none; opacity: 1; stroke-dashoffset: 0; }
}

/* 键盘可见焦点环（深色底上统一用亮绿，覆盖各交互控件） */
:focus-visible {
    outline: 2px solid var(--green-bright);
    outline-offset: 2px;
    border-radius: 4px;
}
.claim-form input:focus-visible {
    outline: 2px solid var(--green-bright);
    outline-offset: 1px;
    border-color: var(--green);
}

/* ============ 法律页 ============ */
.legal-main { max-width: 780px; margin: 0 auto; padding: 56px 24px 100px; }
.legal-main h1 { font-size: clamp(28px, 4vw, 40px); font-weight: 900; letter-spacing: -.02em; margin-bottom: 8px; }
.legal-updated { color: var(--text-dim); font-size: 14px; margin-bottom: 22px; }
.legal-note {
    background: var(--amber-dim);
    border: 1px solid rgba(251, 191, 36, .3);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    font-size: 13.5px;
    color: var(--text-muted);
    margin-bottom: 40px;
}
.legal-main h2 { font-size: 20px; font-weight: 800; margin: 34px 0 12px; }
.legal-main p, .legal-main li { color: var(--text-muted); font-size: 15px; line-height: 1.85; }
.legal-main ul { padding-left: 22px; list-style: disc; margin: 10px 0; }
.legal-main a { color: var(--green-bright); }
.legal-back { display: inline-block; margin-top: 40px; }

/* 内联错误条（success 表单 + 定价结账） */
.form-error,
.checkout-error {
    margin-top: 12px;
    color: #fca5a5;
    font-size: 13.5px;
    font-weight: 600;
    text-align: center;
}
.checkout-error[hidden] { display: none; }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
    .grid--2, .steps { grid-template-columns: 1fr; }
    /* 平板区间（641–960px）三卡网格走两栏；末位奇数卡横跨整行，避免右侧空洞 */
    .grid--3 { grid-template-columns: repeat(2, 1fr); }
    .grid--3 > :last-child:nth-child(odd) { grid-column: 1 / -1; }
    .nav__links, .nav__right { display: none; }
    .nav__burger { display: flex; }
    /* success 页没有汉堡菜单兜底，语言切换器需在窄屏保持可见可点 */
    .success-body .nav__right { display: flex; }
    .success-body .nav__inner { gap: 16px; }
    .hero { padding: 70px 20px 60px; }
    .hero__cta { flex-direction: column; align-items: center; }
    .tv-demo__stage { grid-template-columns: 1fr; }
    .tv-demo__watchlist { display: none; }
    .section { padding: 80px 20px; }
    .ai-card { grid-template-columns: 1fr; padding: 26px; }
    .anchor-row { grid-template-columns: 1fr; max-width: 420px; }
    .anchor--hero { transform: none; order: -1; }
    .price-card { padding: 26px 20px; }
    .footer__grid { grid-template-columns: 1fr 1fr; }
    .footer { padding-bottom: 130px; }
    .viz-flow { transform: scale(.85); }
    .promo-bar { font-size: 12px; }
}

@media (max-width: 640px) {
    .grid--3 { grid-template-columns: 1fr; }
    .grid--3 > :last-child:nth-child(odd) { grid-column: auto; }
    /* 演示图 legend 窄屏允许换行并略缩字号，不再溢出被裁切 */
    .tv-demo__legend { flex-wrap: wrap; gap: 3px 8px; max-width: calc(100% - 20px); font-size: 9.5px; }
}

/* ============ 按钮加载态 ============ */
.btn.is-loading { opacity: .65; pointer-events: none; }

/* ============ 订单状态页 ============ */
.success-body { min-height: 100vh; display: flex; flex-direction: column; }
.success-main {
    flex: 1;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 80px 20px;
}
.status-card {
    width: 100%;
    max-width: 520px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 44px 36px;
    text-align: center;
    box-shadow: 0 30px 80px -30px rgba(0, 0, 0, .8);
}
.status-card h1 { font-size: 24px; font-weight: 800; margin: 18px 0 10px; line-height: 1.4; }
.status-card p { color: var(--text-muted); font-size: 15px; margin-bottom: 22px; }
.status-icon {
    width: 58px; height: 58px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
}
.status-icon--ok { background: var(--green-dim); color: var(--green-bright); border: 1px solid rgba(16, 185, 129, .4); }
.status-icon--wait { background: var(--amber-dim); border: 1px solid rgba(251, 191, 36, .35); }
.status-icon--err { background: var(--red-dim); color: #fca5a5; border: 1px solid rgba(239, 68, 68, .4); }
.spinner {
    width: 44px; height: 44px;
    border-radius: 50%;
    border: 3px solid var(--border);
    border-top-color: var(--green);
    margin: 0 auto;
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.claim-form { display: flex; flex-direction: column; gap: 16px; text-align: left; margin-top: 6px; }
.claim-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--text-muted); }
.claim-form input {
    background: var(--card-2);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    padding: 12px 14px;
    color: var(--text);
    font-size: 15px;
    font-family: inherit;
    outline: none;
    transition: border-color .15s ease;
}
.claim-form input:focus { border-color: var(--green); }