/* ═══════════════════════════════════════════════════════════
   GEO智评 — Commercial Website  v3 · MONO
   Black & white editorial — strong typography, clean geometry,
   monochrome palette, all animations preserved
   ═══════════════════════════════════════════════════════════ */

:root{
    --bg:       #000000;
    --bg2:      #080808;
    --bg3:      #111111;
    --surface:  rgba(255,255,255,.035);
    --surface2: rgba(255,255,255,.055);

    --brd:      rgba(255,255,255,.10);
    --brd-h:    rgba(255,255,255,.22);

    --tx:       #f5f5f5;
    --tx2:      #999999;
    --tx3:      #5a5a5a;

    --accent:   #ffffff;
    --accent2:  #cccccc;
    --dim:      #666666;
    --blue:     #5b9bff;
    --blue-soft:#7fb0ff;
    --blue-dim: rgba(91,155,255,.16);

    --g1: linear-gradient(135deg,#ffffff,#888888);
    --g2: linear-gradient(135deg,#e0e0e0,#999999);
    --g-text: linear-gradient(90deg,#ffffff,#a9c9ff);
    --g-btn: linear-gradient(135deg,#ffffff 0%,#cccccc 100%);
    --g-btn-h: linear-gradient(135deg,#ffffff 0%,#e0e0e0 100%);

    --ff: 'Inter','Noto Sans SC',system-ui,-apple-system,sans-serif;
    --ff-display: 'Inter','Noto Sans SC',system-ui,-apple-system,sans-serif;

    --r:   16px;
    --r-s: 10px;
    --r-l: 28px;
    --r-f: 999px;

    --ease:  cubic-bezier(.22,1,.36,1);
    --ease2: cubic-bezier(.4,0,.2,1);
    --dur:   .4s;

    --glow-c: rgba(255,255,255,.06);
    --glow-v: rgba(255,255,255,.04);

    /* particle background colors (read by JS) */
    --p-c1: 255,255,255;
    --p-c2: 110,165,255;
    --p-c3: 160,160,160;
    --p-c4: 220,220,220;

    /* gauge gradient (read by JS) */
    --g-gauge-1: #ffffff;
    --g-gauge-2: #5b9bff;
}

/* ── Reset ── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{
    font-family:var(--ff);color:var(--tx);line-height:1.65;overflow-x:hidden;
    background:var(--bg);
    background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.025'/%3E%3C/svg%3E");
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button,input,textarea,select{font:inherit;color:inherit}
ul{list-style:none}
abbr{color:#ff4444;text-decoration:none}
.skip-link{
    position:fixed;
    top:16px;
    left:16px;
    z-index:1200;
    padding:10px 14px;
    border-radius:999px;
    background:#fff;
    color:#000;
    font-size:13px;
    font-weight:700;
    transform:translateY(-140%);
    transition:transform .25s var(--ease);
}
.skip-link:focus{
    transform:translateY(0);
}

/* ── Interactive background canvas ── */
#bgCanvas{position:fixed;inset:0;z-index:0;pointer-events:none;width:100%;height:100%}
.site-nav{z-index:900}
.site-main{position:relative;z-index:1}
.site-footer{position:relative;z-index:1}

.site-container{max-width:1140px;margin:0 auto;padding:0 28px}

/* ═══════════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════════ */
.site-nav{position:fixed;top:0;left:0;right:0;z-index:900;transition:all .5s var(--ease)}
.site-nav::after{
    content:'';position:absolute;bottom:0;left:5%;right:5%;height:1px;
    background:linear-gradient(90deg,transparent,var(--brd),transparent);
    opacity:0;transition:opacity .5s var(--ease);
}
.site-nav.scrolled{
    background:rgba(0,0,0,.80);
    backdrop-filter:blur(24px) saturate(1.2);
    -webkit-backdrop-filter:blur(24px) saturate(1.2);
}
.site-nav.scrolled::after{opacity:1}

.site-nav-inner{
    max-width:1140px;margin:0 auto;padding:0 28px;
    display:flex;align-items:center;height:76px;gap:32px;
}

/* logo */
.site-logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.site-logo-mark{
    width:40px;height:40px;flex-shrink:0;
    display:grid;place-items:center;color:#fff;position:relative;
}
.site-logo-mark .planet-mark{
    width:100%;height:100%;display:block;object-fit:contain;
}
.site-logo-mark.sm{width:30px;height:30px}
.site-logo-wordmark{font-weight:700;font-size:19px;letter-spacing:-.02em;color:#fff}
.site-logo-wordmark em{font-style:normal;color:var(--tx2)}

.site-nav-menu{display:flex;gap:6px;margin-left:auto}
.site-nav-link{
    padding:8px 18px;border-radius:var(--r-f);
    font-size:14px;font-weight:500;color:var(--tx2);
    transition:color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.site-nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.site-nav-cta{margin-left:8px}

/* burger */
.site-nav-burger{
    display:none;background:none;border:none;cursor:pointer;
    width:28px;height:20px;position:relative;flex-shrink:0;margin-left:auto;
}
.site-nav-burger i{
    display:block;position:absolute;left:0;width:100%;height:2px;
    background:var(--tx);border-radius:2px;
    transition:transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.site-nav-burger i:nth-child(1){top:0}
.site-nav-burger i:nth-child(2){top:9px}
.site-nav-burger i:nth-child(3){top:18px}
.site-nav-burger.open i:nth-child(1){transform:translateY(9px) rotate(45deg)}
.site-nav-burger.open i:nth-child(2){opacity:0}
.site-nav-burger.open i:nth-child(3){transform:translateY(-9px) rotate(-45deg)}

/* ═══════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════ */
.glow-btn{
    display:inline-flex;align-items:center;gap:9px;
    padding:13px 30px;border-radius:var(--r-f);
    font-weight:600;font-size:15px;border:none;cursor:pointer;
    color:#000;background:#fff;
    position:relative;overflow:hidden;z-index:0;
    transition:transform .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease);
    box-shadow:0 0 28px rgba(255,255,255,.10), inset 0 1px 0 rgba(255,255,255,.3);
}
.glow-btn::before{
    content:'';position:absolute;top:0;left:-100%;width:60%;height:100%;
    background:linear-gradient(105deg,transparent 40%,rgba(255,255,255,.4) 50%,transparent 60%);
    animation:shimmer 3.5s ease-in-out infinite;pointer-events:none;
}
@keyframes shimmer{0%,100%{left:-100%}50%{left:150%}}
.glow-btn::after{
    content:'';position:absolute;inset:0;border-radius:inherit;
    background:linear-gradient(180deg,rgba(255,255,255,.15) 0%,transparent 50%);
    pointer-events:none;
}
.glow-btn:hover{
    transform:translateY(-3px) scale(1.02);
    box-shadow:0 0 48px rgba(255,255,255,.18), 0 8px 32px rgba(0,0,0,.4);
    background:#f0f0f0;
}
.glow-btn:active{transform:translateY(0) scale(1)}
.glow-btn.lg{padding:17px 40px;font-size:16px;letter-spacing:.01em}
.glow-btn.sm{padding:9px 22px;font-size:13px}
.glow-btn.full{width:100%;justify-content:center}

.glow-btn svg{stroke:#000}

.ghost-btn{
    display:inline-flex;align-items:center;gap:9px;
    padding:13px 30px;border-radius:var(--r-f);
    font-weight:600;font-size:15px;cursor:pointer;
    color:var(--tx2);background:transparent;
    border:1px solid var(--brd-h);
    transition:color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform .3s var(--ease);
}
.ghost-btn:hover{color:#fff;border-color:rgba(255,255,255,.35);background:rgba(255,255,255,.04);transform:translateY(-2px)}
.ghost-btn.lg{padding:17px 40px;font-size:16px}
.ghost-btn.sm{padding:9px 22px;font-size:13px}

/* ═══════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════ */
.hero{
    position:relative;min-height:100vh;display:flex;align-items:center;
    padding:120px 0 80px;overflow:hidden;
}

.hero-canvas{position:absolute;inset:0;pointer-events:none}
.hero-orb{position:absolute;border-radius:50%;will-change:transform}
.hero-orb--a{
    width:700px;height:700px;top:-20%;left:-12%;
    background:radial-gradient(circle,rgba(255,255,255,.06),transparent 70%);
    animation:orbA 20s ease-in-out infinite;
}
.hero-orb--b{
    width:600px;height:600px;bottom:-15%;right:-8%;
    background:radial-gradient(circle,rgba(255,255,255,.05),transparent 70%);
    animation:orbB 24s ease-in-out infinite;
}
.hero-orb--c{
    width:400px;height:400px;top:35%;left:50%;
    background:radial-gradient(circle,rgba(255,255,255,.04),transparent 70%);
    animation:orbC 16s ease-in-out infinite;
}
@keyframes orbA{0%,100%{transform:translate(0,0)}33%{transform:translate(40px,-50px)}66%{transform:translate(-30px,40px)}}
@keyframes orbB{0%,100%{transform:translate(0,0)}33%{transform:translate(-35px,45px)}66%{transform:translate(25px,-35px)}}
@keyframes orbC{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-20px,20px) scale(1.1)}}

.hero-mesh{
    position:absolute;inset:0;
    background-image:radial-gradient(circle,rgba(255,255,255,.04) 1px,transparent 1px);
    background-size:32px 32px;
}

.hero-fade{
    position:absolute;bottom:0;left:0;right:0;height:220px;
    background:linear-gradient(transparent,var(--bg));pointer-events:none;
}

.hero-body{position:relative;text-align:center;max-width:820px;margin:0 auto}

.pill{
    display:inline-flex;align-items:center;gap:8px;
    padding:7px 22px;border-radius:var(--r-f);
    font-size:13px;font-weight:600;letter-spacing:.04em;
    background:rgba(255,255,255,.05);color:var(--tx2);
    border:1px solid rgba(255,255,255,.12);
}
.pill::before{
    content:'';width:6px;height:6px;border-radius:50%;
    background:#fff;box-shadow:0 0 8px rgba(255,255,255,.4);
    animation:pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}

.hero-heading{
    font-family:var(--ff-display);
    margin-top:32px;
    font-size:clamp(38px,5.6vw,68px);
    font-weight:650;
    line-height:1.18;
    letter-spacing:-.022em;
    color:#fff;
    text-wrap:balance;
}
.hero-heading-top,
.hero-heading-bottom{
    display:block;
}
.hero-heading-top{
    font-weight:520;
    opacity:.84;
}
.hero-heading-bottom{
    margin-top:10px;
    font-weight:700;
    filter:drop-shadow(0 0 12px rgba(255,255,255,.08));
}
.text-gradient{
    color:#f3f3f3;
    background:linear-gradient(90deg,#ffffff 0%, #eaf1ff 42%, #bcd4ff 74%, #8fb6ff 100%);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
}
.hero-sub{
    margin-top:28px;font-size:clamp(16px,2vw,20px);color:var(--tx2);
    max-width:640px;margin-left:auto;margin-right:auto;line-height:1.75;
}
.hero-actions{margin-top:44px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-definition{
    margin:24px auto 0;
    max-width:760px;
    padding:14px 18px;
    border-radius:18px;
    border:1px solid rgba(255,255,255,.08);
    background:rgba(255,255,255,.025);
}
.hero-definition p{
    color:var(--tx2);
    font-size:14px;
    line-height:1.75;
}
.hero-definition strong{
    color:#f0f0f0;
    font-weight:700;
}

.hero-metrics{
    margin-top:64px;display:inline-flex;align-items:center;gap:32px;
    padding:20px 44px;border-radius:var(--r-l);
    background:var(--surface);border:1px solid var(--brd);
    backdrop-filter:blur(12px);
    box-shadow:0 8px 32px rgba(0,0,0,.5);
}
.hero-metric{display:flex;flex-direction:column;align-items:center;gap:3px}
.hero-metric strong{
    font-size:32px;font-weight:900;line-height:1;color:#fff;
}
.hero-metric span{font-size:12px;color:var(--tx3);font-weight:500;letter-spacing:.02em}
.hero-metric-sep{width:1px;height:36px;background:linear-gradient(transparent,var(--brd-h),transparent)}

/* ═══════════════════════════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════════════════════════ */
.sect{padding:110px 0;position:relative}
.sect--dark{background:var(--bg2)}
.sect--dims{background:var(--bg)}
.sect--cta{padding:80px 0 130px}

.sect::before{
    content:'';position:absolute;top:0;left:10%;right:10%;height:1px;
    background:linear-gradient(90deg,transparent,var(--brd-h),transparent);
}
.sect:first-child::before{display:none}

.sect-head{text-align:center;max-width:620px;margin:0 auto 64px}
.sect-head h2{font-size:clamp(30px,4.5vw,48px);font-weight:800;letter-spacing:-.035em;margin-top:18px;line-height:1.12;color:#fff}
.sect-head p{margin-top:14px;color:var(--tx2);font-size:17px;line-height:1.7}
.sect-head.light h2{color:#fff}
.sect-head.light p{color:rgba(255,255,255,.45)}

.sect-tag{
    display:inline-block;padding:6px 18px;border-radius:var(--r-f);
    font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.10em;
    background:rgba(255,255,255,.05);color:var(--tx2);
    border:1px solid rgba(255,255,255,.10);
}
.sect-tag.ghost{background:rgba(255,255,255,.04);color:var(--tx3);border-color:rgba(255,255,255,.08)}

/* ═══════════════════════════════════════════════════════════
   GLASS CARDS (soft frosted glass)
   ═══════════════════════════════════════════════════════════ */
.card-row{display:grid;gap:24px}
.card-row.thirds{grid-template-columns:repeat(3,1fr)}
.card-row.fours{grid-template-columns:repeat(4,1fr)}

.glass-card{
    --glass-x:50%;
    --glass-y:18%;
    padding:40px 32px;border-radius:var(--r-l);position:relative;
    background:
        radial-gradient(140% 140% at 50% 50%, rgba(255,255,255,.002) 0%, rgba(255,255,255,.004) 34%, rgba(255,255,255,.012) 78%, rgba(255,255,255,.018) 100%);
    border:1px solid rgba(255,255,255,.095);
    backdrop-filter:blur(2px) saturate(110%) brightness(1.08);
    -webkit-backdrop-filter:blur(2px) saturate(110%) brightness(1.08);
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,.10),
        inset 0 -1px 0 rgba(255,255,255,.008),
        0 10px 24px rgba(0,0,0,.11),
        0 1px 3px rgba(255,255,255,.01);
    transition:transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s var(--ease), background .45s var(--ease);
    overflow:hidden;
    isolation:isolate;
}
.glass-card::before{
    content:'';position:absolute;inset:0;border-radius:inherit;
    background:
        linear-gradient(180deg, rgba(255,255,255,.13) 0%, rgba(255,255,255,.026) 10%, rgba(255,255,255,0) 22%);
    opacity:.66;pointer-events:none;
}
.glass-card:hover{
    transform:translateY(-5px);
    border-color:rgba(255,255,255,.12);
    background:
        radial-gradient(140% 140% at 50% 50%, rgba(255,255,255,.003) 0%, rgba(255,255,255,.006) 34%, rgba(255,255,255,.014) 78%, rgba(255,255,255,.022) 100%);
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,.12),
        inset 0 -1px 0 rgba(255,255,255,.01),
        0 14px 28px rgba(0,0,0,.14),
        0 3px 8px rgba(255,255,255,.015);
}
.glass-card::after{
    content:'';position:absolute;inset:0;border-radius:inherit;
    background:
        radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255,255,255,.15) 0%, rgba(255,255,255,.05) 18%, rgba(255,255,255,0) 42%),
        radial-gradient(120% 90% at 50% 50%, rgba(255,255,255,0) 34%, rgba(255,255,255,.02) 78%, rgba(255,255,255,.04) 100%);
    opacity:.26;pointer-events:none;
    transition:opacity .35s var(--ease), background-position .2s linear;
}
.glass-card:hover::after{opacity:.34}

.glass-card h3{font-size:19px;font-weight:700;margin:22px 0 10px;position:relative}
.glass-card p{color:var(--tx2);font-size:15px;line-height:1.75;position:relative}

.glass-card-icon{
    width:56px;height:56px;border-radius:16px;
    display:grid;place-items:center;position:relative;
    background:linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.025));
    border:1px solid rgba(255,255,255,.10);
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,.12),
        0 8px 18px rgba(0,0,0,.12);
    backdrop-filter:blur(20px) saturate(150%);
    -webkit-backdrop-filter:blur(20px) saturate(150%);
}
.glass-card-icon.teal{color:#e7e7ea}
.glass-card-icon.violet{color:#d8d8dc}
.glass-card-icon.cyan{color:#f1f1f3}

/* ═══════════════════════════════════════════════════════════
   TIMELINE
   ═══════════════════════════════════════════════════════════ */
.timeline{position:relative;max-width:740px;margin:0 auto}
.timeline-rail{
    position:absolute;left:24px;top:0;bottom:0;width:2px;
    background:linear-gradient(var(--brd),rgba(255,255,255,.25),rgba(255,255,255,.15),var(--brd));
}
.timeline-step{
    position:relative;display:flex;align-items:flex-start;gap:32px;
    padding:0 0 52px 68px;
}
.timeline-step:last-child{padding-bottom:0}

.timeline-dot{
    position:absolute;left:16px;top:8px;width:18px;height:18px;
    border-radius:50%;background:var(--bg2);
    border:3px solid #fff;
    box-shadow:0 0 16px rgba(255,255,255,.18);
    animation:dot-pulse 3s ease-in-out infinite;
}
@keyframes dot-pulse{0%,100%{box-shadow:0 0 16px rgba(255,255,255,.18)}50%{box-shadow:0 0 28px rgba(255,255,255,.30)}}

.timeline-card{flex:1}
.timeline-card em{
    font-style:normal;font-size:13px;font-weight:700;
    color:var(--tx2);letter-spacing:.08em;
}
.timeline-card h3{font-size:21px;font-weight:700;color:#fff;margin:8px 0 10px}
.timeline-card p{color:var(--tx2);font-size:15px;line-height:1.75}

.timeline-icon{
    flex-shrink:0;width:68px;height:68px;border-radius:18px;
    display:grid;place-items:center;
    background:var(--surface);border:1px solid var(--brd);
    color:var(--tx2);
    transition:border-color .4s var(--ease), box-shadow .4s var(--ease);
}
.timeline-step:hover .timeline-icon{
    border-color:var(--brd-h);
    box-shadow:0 0 24px rgba(255,255,255,.05);
}

/* ═══════════════════════════════════════════════════════════
   PLATFORM TILES
   ═══════════════════════════════════════════════════════════ */
.platform-tile{
    text-align:center;padding:44px 28px;border-radius:var(--r-l);
    background:var(--surface);border:1px solid var(--brd);
    backdrop-filter:blur(12px);
    transition:transform .5s var(--ease), border-color .5s var(--ease), box-shadow .5s var(--ease);
    position:relative;overflow:hidden;
}
.platform-tile::after{
    content:'';position:absolute;bottom:-30%;left:10%;right:10%;height:80%;
    border-radius:50%;filter:blur(40px);opacity:0;
    background:rgba(255,255,255,.04);
    transition:opacity .5s var(--ease);pointer-events:none;
}
.platform-tile:hover{transform:translateY(-6px);border-color:var(--brd-h)}
.platform-tile:hover::after{opacity:1}

.platform-tile h3{font-size:21px;font-weight:700;margin:22px 0 10px;position:relative}
.platform-tile p{color:var(--tx2);font-size:14px;line-height:1.75;position:relative}

.platform-name-chip{
    display:inline-flex;align-items:center;justify-content:center;
    min-width:88px;height:40px;margin:0 auto;
    padding:0 18px;border-radius:999px;
    background:rgba(255,255,255,.035);
    border:1px solid rgba(255,255,255,.1);
    color:#f0f0f2;font-size:15px;font-weight:700;letter-spacing:-.01em;
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,.08),
        0 10px 24px rgba(0,0,0,.14);
    backdrop-filter:blur(8px) saturate(118%);
    -webkit-backdrop-filter:blur(8px) saturate(118%);
    position:relative;
}
.platform-name-chip.teal{color:#f2f2f4}
.platform-name-chip.violet{color:#ececef}
.platform-name-chip.cyan{color:#f7f7f8}
.platform-note{
    margin-top:20px;
    text-align:center;
    color:var(--tx3);
    font-size:12px;
    line-height:1.7;
}

/* ═══════════════════════════════════════════════════════════
   FAQ
   ═══════════════════════════════════════════════════════════ */
.faq-list{
    display:grid;
    gap:16px;
    max-width:900px;
    margin:0 auto;
}
.faq-item{
    padding:0 24px;
    border-radius:var(--r);
    background:rgba(255,255,255,.025);
    border:1px solid var(--brd);
    transition:border-color .35s var(--ease), background .35s var(--ease);
}
.faq-item[open],
.faq-item:hover{
    border-color:var(--brd-h);
    background:rgba(255,255,255,.035);
}
.faq-item summary{
    list-style:none;
    cursor:pointer;
    padding:22px 0;
    font-size:17px;
    font-weight:650;
    color:#fff;
    position:relative;
    padding-right:36px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
    content:'+';
    position:absolute;
    right:0;
    top:50%;
    transform:translateY(-50%);
    color:var(--tx2);
    font-size:24px;
    line-height:1;
}
.faq-item[open] summary::after{
    content:'−';
}
.faq-item p{
    padding:0 0 22px;
    color:var(--tx2);
    font-size:15px;
    line-height:1.8;
}

/* ═══════════════════════════════════════════════════════════
   DIMENSION TILES
   ═══════════════════════════════════════════════════════════ */
.dim-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.sect-subhint{
    display:inline-flex;align-items:center;justify-content:center;
    margin-top:14px;padding:8px 14px;border-radius:999px;
    border:1px solid rgba(255,255,255,.10);
    background:rgba(255,255,255,.03);
    color:var(--tx2);font-size:13px;font-weight:500;
}
.dim-tile{
    min-height:332px;
    border-radius:var(--r);
    perspective:1200px;
}
.dim-tile--interactive{cursor:pointer;position:relative}
.dim-tile-inner{
    position:relative;width:100%;height:100%;
    min-height:332px;
    transform-style:preserve-3d;
    transition:transform .7s cubic-bezier(.22,.8,.2,1);
}
.dim-tile:hover .dim-tile-inner{
    transform:translateY(-4px);
}
.dim-tile.is-flipped .dim-tile-inner{
    transform:rotateY(180deg);
}
.dim-tile.is-flipped:hover .dim-tile-inner{
    transform:rotateY(180deg) translateY(-4px);
}
.dim-tile--interactive:focus-visible{
    outline:none;
}
.dim-tile--interactive:focus-visible .dim-tile-inner{
    box-shadow:0 0 0 2px rgba(255,255,255,.12), 0 0 32px rgba(255,255,255,.06);
}
.dim-tile-face{
    position:absolute;inset:0;
    padding:32px 26px;border-radius:var(--r);
    background:var(--surface);border:1px solid var(--brd);
    backdrop-filter:blur(12px);
    box-shadow:0 0 32px rgba(255,255,255,.04);
    backface-visibility:hidden;
    -webkit-backface-visibility:hidden;
    display:flex;flex-direction:column;
    overflow:hidden;
}
.dim-tile--interactive:hover .dim-tile-face,
.dim-tile--interactive:focus-visible .dim-tile-face{
    border-color:var(--brd-h);
}
.dim-tile-face--front em{
    font-style:normal;font-size:36px;font-weight:900;line-height:1;
    color:rgba(255,255,255,.18);
}
.dim-tile-face--front h4,
.dim-tile-face--back h4{font-size:17px;font-weight:700;margin:10px 0 6px}
.dim-tile-face--front p{font-size:14px;color:var(--tx2);line-height:1.7}
.dim-tile-face--back{
    transform:rotateY(180deg);
    justify-content:flex-start;
    overflow-y:auto;
    scrollbar-width:thin;
    scrollbar-color:rgba(255,255,255,.22) transparent;
}
.dim-tile-face--back::-webkit-scrollbar{width:6px}
.dim-tile-face--back::-webkit-scrollbar-thumb{
    background:rgba(255,255,255,.18);
    border-radius:999px;
}
.dim-tile-face--back::-webkit-scrollbar-track{background:transparent}
.dim-sample-tag{
    display:inline-flex;align-items:center;align-self:flex-start;
    padding:7px 12px;border-radius:999px;
    background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);
    color:var(--tx2);font-size:12px;font-weight:600;
}
.dim-sample-list{
    margin:10px 0 0;padding-left:18px;
    color:#f4f4f5;font-size:13px;line-height:1.65;
    display:grid;gap:8px;
}
.dim-sample-list li::marker{color:rgba(255,255,255,.45)}
.dim-tile-action{
    display:inline-flex;align-items:center;gap:8px;
    margin-top:auto;color:#fff;font-size:13px;font-weight:600;
}
.dim-tile-action--back{
    margin-top:14px;
    padding-top:12px;
    border-top:1px solid rgba(255,255,255,.08);
}
.dim-tile-action::after{
    content:'→';
    color:var(--tx2);
    transition:transform .35s var(--ease), color .35s var(--ease);
}
.dim-tile--interactive:hover .dim-tile-action::after,
.dim-tile--interactive:focus-visible .dim-tile-action::after{
    transform:translateX(3px);
    color:#fff;
}

/* ═══════════════════════════════════════════════════════════
   CTA CARD
   ═══════════════════════════════════════════════════════════ */
.cta-card{
    text-align:center;padding:80px 48px;border-radius:var(--r-l);
    background:var(--surface);border:1px solid var(--brd);
    position:relative;overflow:hidden;
}
.cta-card::before{
    content:'';position:absolute;top:-80%;left:-40%;width:180%;height:260%;
    background:conic-gradient(from 0deg at 50% 50%,
        transparent 0%,rgba(255,255,255,.02) 10%,transparent 20%,
        rgba(255,255,255,.015) 30%,transparent 40%,
        rgba(255,255,255,.02) 55%,transparent 65%);
    animation:cta-spin 10s linear infinite;pointer-events:none;
}
@keyframes cta-spin{to{transform:rotate(360deg)}}
.cta-card::after{
    content:'';position:absolute;top:-50%;left:20%;width:60%;height:100%;
    background:radial-gradient(ellipse,rgba(255,255,255,.025),transparent 70%);
    pointer-events:none;
}
.cta-card h2{font-size:clamp(26px,4vw,42px);font-weight:800;position:relative;color:#fff}
.cta-card p{color:var(--tx2);margin:14px 0 36px;font-size:18px;position:relative}
.cta-card .glow-btn{position:relative}

/* ═══════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════ */
.site-footer{position:relative;padding:80px 0 36px;background:var(--bg);border-top:1px solid var(--brd)}
.site-footer-glow{
    position:absolute;top:-1px;left:50%;width:400px;height:2px;
    transform:translateX(-50%);
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);border-radius:2px;
    box-shadow:0 0 30px 6px rgba(255,255,255,.04);
    max-width:calc(100vw - 24px);
}
.site-footer-top{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px}
.site-footer-brand p{color:var(--tx3);margin-top:18px;font-size:14px;line-height:1.8}
.site-footer-col h4{font-weight:700;font-size:14px;margin-bottom:18px;color:var(--tx2)}
.site-footer-col a,.site-footer-col p{display:block;font-size:14px;color:var(--tx3);margin-bottom:12px;transition:color var(--dur) var(--ease)}
.site-footer-col a:hover{color:#fff}
.site-footer-bottom{
    margin-top:52px;padding-top:24px;
    border-top:1px solid var(--brd);
    font-size:13px;color:var(--tx3);
    display:flex;align-items:center;gap:8px 18px;flex-wrap:wrap;
}
.site-beian{color:var(--tx3);transition:color var(--dur) var(--ease)}
.site-beian:hover{color:var(--tx2)}

/* ═══════════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════════ */
.anim-pop{animation:animPop .65s var(--ease) both}
.anim-rise{animation:animRise .75s var(--ease) both;animation-delay:var(--d,0s)}
@keyframes animPop{from{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}
@keyframes animRise{from{opacity:0;transform:translateY(36px)}to{opacity:1;transform:translateY(0)}}

.anim-on-scroll{opacity:0;transform:translateY(32px);transition:opacity .7s var(--ease), transform .7s var(--ease);transition-delay:var(--d,0s)}
.anim-on-scroll.visible{opacity:1;transform:translateY(0)}

/* ═══════════════════════════════════════════════════════════
   DEMO PAGE
   ═══════════════════════════════════════════════════════════ */
.demo-hero{position:relative;padding:140px 0 64px;text-align:center;overflow:hidden}
.demo-hero-bg{
    position:absolute;inset:0;
    background:radial-gradient(ellipse 70% 55% at 50% 0%,rgba(255,255,255,.04),transparent 70%);
    pointer-events:none;
}
.demo-hero h1{font-size:clamp(32px,5.5vw,52px);font-weight:900;letter-spacing:-.03em;position:relative;color:#fff}
.demo-hero p{color:var(--tx2);font-size:17px;margin-top:14px;position:relative}

.demo-layout{padding-bottom:100px}

.report-hero{
    padding-bottom:36px;
}
.report-layout{
    padding-bottom:120px;
}
.report-summary-card,
.report-section{
    margin-top:28px;
    padding:34px;
    border-radius:var(--r-l);
    background:rgba(255,255,255,.025);
    border:1px solid var(--brd);
}
.report-summary-head{
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:16px;
    margin-bottom:16px;
}
.report-summary-head h2{
    margin-top:14px;
    font-size:clamp(28px,4.2vw,42px);
    font-weight:800;
    line-height:1.15;
    letter-spacing:-.03em;
}
.report-badge{
    padding:8px 14px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.10);
    background:rgba(255,255,255,.04);
    color:var(--tx2);
    font-size:12px;
    font-weight:700;
    white-space:nowrap;
}
.report-summary-text{
    color:var(--tx2);
    font-size:16px;
    line-height:1.8;
}
.report-kpis{
    margin-top:24px;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:14px;
}
.report-kpi{
    padding:18px 18px 16px;
    border-radius:20px;
    background:rgba(255,255,255,.03);
    border:1px solid rgba(255,255,255,.08);
}
.report-kpi strong{
    display:block;
    font-size:34px;
    line-height:1;
    color:#fff;
    font-weight:900;
}
.report-kpi span{
    display:block;
    margin-top:10px;
    color:var(--tx2);
    font-size:13px;
}
.report-section-head{
    margin-bottom:22px;
}
.report-section-head h2{
    font-size:clamp(24px,3.6vw,34px);
    font-weight:800;
    line-height:1.15;
    letter-spacing:-.025em;
}
.report-section-head p{
    margin-top:10px;
    color:var(--tx2);
    font-size:15px;
    line-height:1.8;
    max-width:760px;
}
.report-grid{
    display:grid;
    gap:18px;
}
.report-grid.two{
    grid-template-columns:repeat(2,1fr);
}
.report-grid.three{
    grid-template-columns:repeat(3,1fr);
}
.report-card{
    padding:24px 22px;
    border-radius:20px;
    background:rgba(255,255,255,.03);
    border:1px solid rgba(255,255,255,.08);
}
.report-card h3{
    font-size:19px;
    font-weight:700;
    margin-bottom:12px;
}
.report-card p{
    color:var(--tx2);
    font-size:15px;
    line-height:1.8;
}
.report-list,
.report-ordered{
    display:grid;
    gap:10px;
    color:var(--tx2);
    font-size:15px;
    line-height:1.8;
    padding-left:20px;
}
.report-list{
    list-style:disc;
}
.report-ordered{
    list-style:decimal;
}
.report-list strong,
.report-ordered strong{
    color:#f0f0f0;
    font-weight:700;
}
.report-table-wrap{
    overflow-x:auto;
}
.report-table{
    width:100%;
    border-collapse:collapse;
    min-width:760px;
}
.report-table th,
.report-table td{
    padding:16px 14px;
    text-align:left;
    vertical-align:top;
    border-bottom:1px solid rgba(255,255,255,.08);
}
.report-table th{
    color:#fff;
    font-size:14px;
    font-weight:700;
}
.report-table td{
    color:var(--tx2);
    font-size:14px;
    line-height:1.75;
}
.report-cta{
    margin-top:32px;
    padding-top:0;
    padding-bottom:0;
}

/* ═══════════════════════════════════════════════════════════
   TEST-EFFECT SHOWCASE (静态测试效果页)
   ═══════════════════════════════════════════════════════════ */
.effect-layout{padding-bottom:100px}

.q-item-intent{
    display:inline-block;
    padding:5px 14px;border-radius:var(--r-f);
    font-size:12px;font-weight:600;letter-spacing:.02em;
    background:rgba(255,255,255,.06);color:var(--tx);
    border:1px solid rgba(255,255,255,.14);
}

.effect-context{
    margin-top:40px;padding:30px 34px;border-radius:var(--r-l);
    background:var(--surface);border:1px solid var(--brd);
    backdrop-filter:blur(16px);
}
.effect-context-head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.effect-context-head h2{font-size:19px;font-weight:700}
.effect-chips{display:flex;flex-wrap:wrap;gap:12px}
.effect-chip{
    display:inline-flex;align-items:baseline;gap:9px;
    padding:11px 18px;border-radius:var(--r);
    background:rgba(255,255,255,.03);border:1px solid var(--brd);
    font-size:15px;font-weight:600;color:var(--tx);
}
.effect-chip em{font-style:normal;font-size:12px;font-weight:500;color:var(--tx3)}

.effect-section{margin-top:56px}
.effect-question{
    display:flex;align-items:center;gap:16px;flex-wrap:wrap;
    padding:22px 26px;margin-bottom:26px;border-radius:var(--r);
    background:rgba(255,255,255,.04);border:1px solid var(--brd);
}
.effect-question-text{font-size:19px;font-weight:700;color:#fff;letter-spacing:-.01em}

.answer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.answer-card{
    display:flex;flex-direction:column;
    padding:24px;border-radius:var(--r);
    background:rgba(255,255,255,.025);border:1px solid var(--brd);
    transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.answer-card:hover{border-color:var(--brd-h);transform:translateY(-3px)}
.answer-card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}
.answer-card-head h3{font-size:17px;font-weight:700}
.finding-chip{
    padding:4px 11px;border-radius:var(--r-f);
    font-size:11px;font-weight:600;white-space:nowrap;
    border:1px solid var(--brd);
}
.finding-chip.low{background:rgba(255,255,255,.04);color:var(--tx2);border-color:rgba(255,255,255,.12)}
.finding-chip.mid{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.26)}
.answer-excerpt{
    flex:1;font-size:13.5px;line-height:1.8;color:var(--tx2);
    padding:16px;border-radius:var(--r-s);
    background:rgba(0,0,0,.28);border:1px solid var(--brd);
}
.answer-excerpt strong{color:#fff;font-weight:700}
.answer-foot{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.answer-finding{font-size:13px;line-height:1.7;color:var(--tx)}
.answer-score{
    display:flex;align-items:baseline;justify-content:space-between;gap:10px;
    padding-top:12px;border-top:1px solid var(--brd);
    font-size:26px;font-weight:900;color:#fff;
}
.answer-score em{font-style:normal;font-size:12px;font-weight:500;color:var(--tx3)}

.effect-bridge{
    display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
    padding:34px;border-radius:var(--r-l);
    background:rgba(255,255,255,.03);border:1px solid var(--brd);
}
.effect-bridge h3{font-size:20px;font-weight:700}
.effect-bridge p{margin-top:8px;color:var(--tx2);font-size:15px;line-height:1.7;max-width:540px}

/* interactive diagnosis flow */
.diag-panel{
    margin-top:40px;padding:36px;border-radius:var(--r-l);
    background:var(--surface);border:1px solid var(--brd);
    backdrop-filter:blur(16px);
}
.diag-panel--hidden{display:none}
.diag-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.diag-head h2{font-size:21px;font-weight:700;flex:1}
.diag-badge{
    width:36px;height:36px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;
    font-weight:800;font-size:15px;background:#fff;color:#000;
    box-shadow:0 0 18px rgba(255,255,255,.10);
}
.diag-badge.done{background:#ccc;color:#000}

.diag-context{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}

.diag-label{display:block;font-size:14px;font-weight:600;margin-bottom:10px}
.diag-input{
    width:100%;padding:15px 18px;border-radius:var(--r-s);resize:vertical;
    background:rgba(255,255,255,.03);border:1px solid var(--brd);
    color:var(--tx);font-size:16px;line-height:1.6;
    transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.diag-input:focus{outline:none;border-color:rgba(255,255,255,.35);box-shadow:0 0 0 3px rgba(255,255,255,.05)}

.q-picks{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.q-pick{
    padding:10px 16px;border-radius:var(--r-f);cursor:pointer;text-align:left;
    background:rgba(255,255,255,.03);border:1px solid var(--brd);
    color:var(--tx2);font-size:13px;font-weight:500;
    transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.q-pick:hover{border-color:var(--brd-h);color:#fff}
.q-pick.is-active{border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.08);color:#fff}

.diag-note{
    margin:22px 0;padding:14px 16px;border-radius:var(--r);
    border:1px solid var(--brd);background:rgba(255,255,255,.025);
    color:var(--tx2);font-size:13px;line-height:1.75;
}
.diag-run{width:100%;justify-content:center}

.diag-steps{display:flex;flex-wrap:wrap;gap:18px;margin-bottom:24px}
.diag-step{display:flex;align-items:center;gap:9px;opacity:.32;font-size:13px;font-weight:500;transition:opacity var(--dur) var(--ease)}
.diag-step.is-active{opacity:1}
.diag-step.is-done{opacity:.6}
.diag-step i{
    width:13px;height:13px;border-radius:50%;border:2.5px solid var(--tx3);flex-shrink:0;
    transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.diag-step.is-active i{border-color:#fff;background:#fff;box-shadow:0 0 12px rgba(255,255,255,.3)}
.diag-step.is-done i{border-color:#aaa;background:#aaa}
.diag-bar{height:5px;border-radius:5px;background:var(--brd);overflow:hidden}
.diag-bar-fill{
    height:100%;width:0;border-radius:5px;
    background:linear-gradient(90deg,#fff,#5b9bff);
    box-shadow:0 0 10px rgba(255,255,255,.15);
    transition:width .5s var(--ease);
}
.diag-hint{margin-top:16px;text-align:center;color:var(--tx3);font-size:14px}

.diag-result-hero{
    display:flex;align-items:center;gap:36px;flex-wrap:wrap;
    padding:30px;border-radius:var(--r);margin-bottom:26px;
    background:rgba(255,255,255,.025);border:1px solid var(--brd);
}
.diag-gauge{position:relative;width:140px;height:140px;flex-shrink:0}
.diag-gauge svg{width:100%;height:100%;transform:rotate(-90deg)}
.diag-gauge-track{fill:none;stroke:var(--brd);stroke-width:9}
.diag-gauge-fill{
    fill:none;stroke:url(#diagGaugeGrad);stroke-width:9;stroke-linecap:round;
    stroke-dasharray:439.82;stroke-dashoffset:439.82;
    filter:drop-shadow(0 0 6px rgba(255,255,255,.15));
    transition:stroke-dashoffset 1.2s var(--ease);
}
.diag-gauge-label{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.diag-gauge-label strong{font-size:40px;font-weight:900;line-height:1;color:#fff}
.diag-gauge-label span{font-size:11px;color:var(--tx3);margin-top:5px}
.diag-result-text{flex:1;min-width:240px}
.diag-result-text h3{font-size:20px;font-weight:800;color:#fff;margin:12px 0 8px;letter-spacing:-.01em}
.diag-result-text p{color:var(--tx2);font-size:15px;line-height:1.75}

/* ═══════════════════════════════════════════════════════════
   REPORT DATA-VIZ (仪表盘 / 评分条 / 雷达图)
   ═══════════════════════════════════════════════════════════ */
.report-summary-body{display:flex;align-items:center;gap:40px;margin-top:8px}
.report-summary-main{flex:1}
.report-summary-main .report-summary-text{margin-bottom:22px}

/* gauge */
.viz-gauge{position:relative;width:150px;height:150px;flex-shrink:0}
.viz-gauge svg{width:100%;height:100%;transform:rotate(-90deg)}
.viz-gauge-track{fill:none;stroke:var(--brd);stroke-width:9}
.viz-gauge-fill{
    fill:none;stroke:url(#reportGaugeGrad);stroke-width:9;stroke-linecap:round;
    stroke-dasharray:439.82;stroke-dashoffset:var(--dash,439.82);
    filter:drop-shadow(0 0 6px rgba(255,255,255,.15));
    animation:vizGaugeFill 1.5s var(--ease) both;
}
@keyframes vizGaugeFill{from{stroke-dashoffset:439.82}to{stroke-dashoffset:var(--dash,439.82)}}
.viz-gauge-label{
    position:absolute;inset:0;display:flex;flex-direction:column;
    align-items:center;justify-content:center;text-align:center;
}
.viz-gauge-label strong{font-size:44px;font-weight:900;line-height:1;color:#fff}
.viz-gauge-label span{font-size:11px;color:var(--tx3);margin-top:6px}

/* bars */
.viz-bars{display:flex;flex-direction:column;gap:14px;margin-bottom:30px}
.viz-bar-row{display:flex;align-items:center;gap:16px}
.viz-bar-name{width:84px;flex-shrink:0;font-size:14px;font-weight:600;color:var(--tx)}
.viz-bar-track{flex:1;height:10px;border-radius:6px;background:var(--brd);overflow:hidden}
.viz-bar-fill{
    display:block;height:100%;width:var(--w,0);border-radius:6px;
    background:linear-gradient(90deg,#fff,#5b9bff);
    animation:vizBarGrow 1.1s var(--ease) both;
}
@keyframes vizBarGrow{from{width:0}to{width:var(--w,0)}}
.viz-bar-val{width:34px;flex-shrink:0;text-align:right;font-size:18px;font-weight:800;color:#fff}

/* radar */
.viz-radar-wrap{display:flex;align-items:center;gap:36px;flex-wrap:wrap}
.viz-radar{flex-shrink:0;width:300px;max-width:100%}
.viz-radar svg{width:100%;height:auto;overflow:visible}
.viz-radar-grid{fill:none;stroke:var(--brd);stroke-width:1}
.viz-radar-grid--outer{stroke:var(--brd-h)}
.viz-radar-spoke{stroke:var(--brd);stroke-width:1}
.viz-radar-area{
    fill:rgba(91,155,255,.15);stroke:#8fb6ff;stroke-width:2;stroke-linejoin:round;
    animation:vizRadarIn .9s var(--ease) both;transform-origin:150px 150px;
}
@keyframes vizRadarIn{from{opacity:0;transform:scale(.7)}to{opacity:1;transform:scale(1)}}
.viz-radar-dot{fill:#fff}
.viz-radar-label{fill:var(--tx2);font-size:12px;font-weight:600}
.viz-radar-legend{flex:1;min-width:220px}
.viz-radar-legend p{color:var(--tx2);font-size:14px;line-height:1.8;margin-bottom:18px}
.viz-radar-legend strong{color:#fff;font-weight:700}
.viz-legend-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.viz-legend-list li{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--tx2)}
.viz-legend-list em{margin-left:auto;font-style:normal;font-weight:800;color:#fff}
.viz-legend-dot{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,#fff,#5b9bff);flex-shrink:0}

/* ═══════════════════════════════════════════════════════════
   SHARED FORM FIELDS (contact modal)
   ═══════════════════════════════════════════════════════════ */
.demo-form .field{margin-bottom:22px}
.demo-form label{display:block;font-size:14px;font-weight:600;margin-bottom:9px}
.demo-form input,.demo-form textarea{
    width:100%;padding:14px 18px;border-radius:var(--r-s);
    background:rgba(255,255,255,.03);border:1px solid var(--brd);
    color:var(--tx);font-size:15px;
    transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.demo-form input:focus,.demo-form textarea:focus{
    outline:none;border-color:rgba(255,255,255,.35);
    box-shadow:0 0 0 3px rgba(255,255,255,.05);
}
.demo-form input::placeholder,.demo-form textarea::placeholder{color:var(--tx3)}
.form-row{display:grid;gap:22px}
.form-row.two{grid-template-columns:1fr 1fr}

/* ═══════════════════════════════════════════════════════════
   MODAL
   ═══════════════════════════════════════════════════════════ */
.modal-overlay{
    position:fixed;inset:0;z-index:950;
    background:rgba(0,0,0,.7);backdrop-filter:blur(8px);
    display:none;align-items:flex-start;justify-content:center;padding:24px;
    overflow-y:auto;
}
.modal-overlay.show{display:flex}
.modal-box{
    width:100%;max-width:480px;padding:40px;border-radius:var(--r-l);
    background:var(--bg3);border:1px solid var(--brd);position:relative;
    margin:auto 0;
    max-height:calc(100vh - 48px);
    overflow-y:auto;
}
.modal-close{
    position:absolute;top:16px;right:16px;
    width:34px;height:34px;border-radius:50%;
    display:grid;place-items:center;border:none;cursor:pointer;
    background:rgba(255,255,255,.05);color:var(--tx2);font-size:20px;
    transition:color var(--dur) var(--ease);
}
.modal-close:hover{color:#fff}
.modal-box h2{font-size:23px;font-weight:700;margin-bottom:10px}
.modal-box>p{color:var(--tx2);font-size:14px;margin-bottom:28px}
.modal-sent{text-align:center;color:#ccc;font-weight:600;padding:28px 0;font-size:16px}
body.modal-open{overflow:hidden}

/* ═══════════════════════════════════════════════════════════
   FLOATING ACTION BUTTONS (悬浮球)
   ═══════════════════════════════════════════════════════════ */
.fab,.contact-fab{
    position:fixed;
    right:32px;z-index:940;
    width:56px;height:56px;border-radius:50%;
    border:1px solid var(--brd-h);
    background:var(--bg3);
    color:var(--tx);
    cursor:pointer;
    display:grid;place-items:center;
    box-shadow:0 4px 24px rgba(0,0,0,.4), 0 0 0 1px rgba(255,255,255,.06);
    transition:transform .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease), opacity .3s var(--ease);
}
.fab:hover,.contact-fab:hover{
    transform:scale(1.08);
    box-shadow:0 6px 32px rgba(0,0,0,.5), 0 0 0 1px rgba(255,255,255,.12);
    background:var(--surface2);
}
.fab:active,.contact-fab:active{transform:scale(.96)}
.contact-fab{bottom:32px}
.fab--back{top:80px;left:28px;right:auto;bottom:auto;width:42px;height:42px;opacity:0;pointer-events:none}
.fab--back.is-visible{opacity:1;pointer-events:auto}
.contact-fab-icon{transition:opacity .2s var(--ease), transform .2s var(--ease)}
.contact-fab-icon--close{position:absolute;opacity:0;transform:rotate(-90deg)}
.contact-fab.is-active .contact-fab-icon--default{opacity:0;transform:rotate(90deg)}
.contact-fab.is-active .contact-fab-icon--close{opacity:1;transform:rotate(0)}
@media(max-width:640px){
    .contact-fab{bottom:20px;right:20px;width:50px;height:50px}
    .fab--back{top:72px;left:16px;width:38px;height:38px}
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media(max-width:900px){
    .card-row.thirds{grid-template-columns:1fr}
    .card-row.fours{grid-template-columns:repeat(2,1fr)}
    .dim-grid{grid-template-columns:repeat(2,1fr)}
    .site-footer-top{grid-template-columns:1fr;gap:36px}
    .answer-grid{grid-template-columns:1fr}
    .report-summary-body{flex-direction:column;text-align:center;gap:26px}
    .report-summary-main{width:100%}
    .report-summary-main .report-summary-text{text-align:left}
    .viz-radar-wrap{justify-content:center}
    .report-kpis{grid-template-columns:repeat(2,1fr)}
    .report-grid.two,
    .report-grid.three{grid-template-columns:1fr}
    .timeline-icon{display:none}
}
@media(max-width:768px){
    .site-nav-menu{
        position:fixed;top:76px;left:0;right:0;
        background:rgba(0,0,0,.95);backdrop-filter:blur(20px);
        flex-direction:column;padding:20px 28px;
        transform:translateY(-12px);opacity:0;pointer-events:none;
        transition:transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
        border-bottom:1px solid var(--brd);
    }
    .site-nav-menu.open{transform:translateY(0);opacity:1;pointer-events:auto}
    .site-nav-link{padding:14px 0;font-size:16px}
    .site-nav-burger{display:block}
    .site-nav-cta{display:none}

    .hero-heading{font-size:35px;line-height:1.22}
    .hero-heading-bottom{margin-top:8px}
    .hero-definition{padding:14px 16px}
    .hero-metrics{flex-direction:column;gap:18px;padding:24px}
    .hero-metric-sep{width:52px;height:1px;background:var(--brd)}
    .report-summary-card,
    .report-section{padding:26px 20px}
    .report-summary-head{flex-direction:column}
    .report-kpis{grid-template-columns:1fr}

    .dim-grid{grid-template-columns:1fr}
    .form-row.two{grid-template-columns:1fr}
    .effect-context{padding:24px 20px}
    .effect-section{margin-top:44px}
    .effect-question{flex-direction:column;align-items:flex-start;gap:12px}
    .diag-panel{padding:26px 20px}
    .diag-result-hero{flex-direction:column;text-align:center;gap:22px}
    .diag-result-text{text-align:center}
    .effect-bridge{flex-direction:column;align-items:flex-start;text-align:left;padding:26px 20px}
    .viz-radar-wrap{flex-direction:column}
    .viz-radar{margin:0 auto}
    .viz-legend-list{grid-template-columns:1fr 1fr}
    .dim-tile{min-height:300px}
    .dim-tile-inner{min-height:300px}
    .dim-tile-face{padding:26px 22px}
}

/* Stacked report table (phones) — no horizontal swipe */
@media(max-width:600px){
    .report-table-wrap{overflow-x:visible}
    .report-table{min-width:0}
    .report-table thead{
        position:absolute;width:1px;height:1px;padding:0;margin:-1px;
        overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
    }
    .report-table,
    .report-table tbody,
    .report-table tr,
    .report-table td{display:block;width:100%}
    .report-table tr{
        border:1px solid var(--brd);border-radius:var(--r);
        background:rgba(255,255,255,.025);
        padding:6px 18px;margin-bottom:14px;
    }
    .report-table td{
        padding:11px 0;border-bottom:1px solid var(--brd);
        font-size:14px;line-height:1.7;
    }
    .report-table tr td:last-child{border-bottom:none}
    .report-table td::before{
        content:attr(data-label);
        display:block;margin-bottom:3px;
        color:var(--tx3);font-size:12px;font-weight:600;
    }
}