/* ============================================================
   东莞市旭正刀具有限公司 — 全站设计系统
   核心业务：枪钻 · 枪钻重焊
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
    --ink:        #0a0d18;
    --navy:       #121729;
    --navy-2:     #1a2038;
    --navy-3:     #232a45;
    --line-dark:  rgba(201, 169, 110, .16);

    --gold:       #c9a96e;
    --gold-bright:#e4cd9a;
    --gold-dim:   #9a7f4e;
    --signal:     #e94560;

    --steel:      #7c869f;
    --steel-2:    #aab3c6;

    --text-hi:    #eef1f7;
    --text-mid:   #a7aec0;
    --text-dim:   #6b7284;
    --text-body:  #4b5262;
    --text-dark:  #14182a;

    --bg-soft:    #f4f5f8;
    --bg-soft-2:  #eaecef;
    --white:      #ffffff;

    --grad-metal: linear-gradient(135deg, #2b3247 0%, #3c4460 45%, #232a3e 100%);
    --grad-hero:  linear-gradient(140deg, #080b14 0%, #121729 45%, #1a2138 100%);
    --grad-gold:  linear-gradient(120deg, #a88950 0%, #e4cd9a 45%, #c9a96e 70%, #9a7f4e 100%);

    --shadow-sm:  0 2px 10px rgba(10, 13, 24, .08);
    --shadow-md:  0 10px 30px rgba(10, 13, 24, .13);
    --shadow-lg:  0 22px 60px rgba(10, 13, 24, .22);
    --shadow-gold:0 8px 34px rgba(201, 169, 110, .28);

    --r-sm: 6px;
    --r-md: 12px;
    --r-lg: 20px;

    --ease: cubic-bezier(.22, .68, .36, 1);
    --t:    all .34s var(--ease);

    --font: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;

    --header-h: 74px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 12px);
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

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

a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4, h5 { color: var(--text-dark); line-height: 1.28; font-weight: 700; letter-spacing: -.01em; }

::selection { background: var(--gold); color: var(--navy); }

.container {
    width: 100%;
    max-width: 1240px;
    margin-inline: auto;
    padding-inline: clamp(18px, 4vw, 32px);
}

.section { padding-block: clamp(58px, 8.5vw, 108px); }
.bg-soft { background: var(--bg-soft); }
.bg-dark { background: var(--grad-hero); color: var(--text-mid); }
.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4 { color: var(--text-hi); }

/* ---------- Scroll progress ---------- */
.scroll-progress {
    position: fixed; inset: 0 0 auto 0; height: 3px; z-index: 1200;
    background: linear-gradient(90deg, var(--gold-dim), var(--gold-bright));
    width: 0; transform-origin: left;
    pointer-events: none;
}

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .75s var(--ease), transform .75s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .09s; }
.reveal[data-delay="2"] { transition-delay: .18s; }
.reveal[data-delay="3"] { transition-delay: .27s; }
.reveal[data-delay="4"] { transition-delay: .36s; }
.reveal[data-delay="5"] { transition-delay: .45s; }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
    *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- Section title ---------- */
.section-title { text-align: center; margin-bottom: clamp(34px, 4.6vw, 58px); }
.section-title .eyebrow {
    display: block; font-size: .78rem; letter-spacing: .28em; text-transform: uppercase;
    color: var(--gold); font-weight: 700; margin-bottom: 12px;
}
.section-title h2 {
    font-size: clamp(1.6rem, 3.3vw, 2.4rem);
    position: relative; display: inline-block; padding-bottom: 18px;
}
.section-title h2::after {
    content: ''; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
    width: 58px; height: 3px; border-radius: 2px; background: var(--grad-gold);
}
.section-title p.lead {
    max-width: 660px; margin: 18px auto 0; font-size: .96rem; color: var(--text-body); line-height: 1.85;
}
.bg-dark .section-title p.lead, .section-title p.lead.on-dark { color: var(--text-mid); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    padding: 13px 30px; border-radius: var(--r-sm); border: 2px solid transparent;
    font-size: .92rem; font-weight: 700; letter-spacing: .02em;
    transition: var(--t); white-space: nowrap; cursor: pointer; position: relative; overflow: hidden;
}
.btn svg { width: 16px; height: 16px; }
.btn-gold { background: var(--grad-gold); color: var(--navy); border-color: var(--gold); }
.btn-gold:hover { transform: translateY(-3px); box-shadow: var(--shadow-gold); }
.btn-ghost { background: transparent; color: var(--text-hi); border-color: rgba(255,255,255,.28); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-3px); }
.btn-outline { background: transparent; color: var(--text-dark); border-color: #d5d8e0; }
.btn-outline:hover { border-color: var(--gold); color: var(--gold-dim); transform: translateY(-3px); }
.btn-sm { padding: 9px 20px; font-size: .84rem; }

/* ---------- Top bar ---------- */
.top-bar {
    background: var(--ink); color: var(--text-mid); font-size: .82rem; padding: 7px 0;
    border-bottom: 1px solid rgba(201,169,110,.1);
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.top-bar .info { display: flex; gap: 26px; flex-wrap: wrap; }
.top-bar .info span { display: inline-flex; align-items: center; gap: 7px; }
.top-bar .info svg { width: 14px; height: 14px; fill: var(--gold); flex-shrink: 0; }
.top-bar .slogan { color: var(--gold); font-weight: 600; letter-spacing: .04em; }

/* ---------- Header ---------- */
.header {
    background: rgba(18, 23, 41, .92);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    position: sticky; top: 0; z-index: 1000;
    border-bottom: 1px solid var(--line-dark);
    transition: box-shadow .3s var(--ease), background .3s var(--ease);
}
.header.is-stuck { box-shadow: 0 8px 32px rgba(0,0,0,.45); background: rgba(14, 18, 33, .97); }
.nav { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 20px; }

.logo { display: flex; align-items: center; gap: 13px; flex-shrink: 0; }
.logo-mark {
    width: 44px; height: 44px; border-radius: 50%; flex-shrink: 0;
    background: var(--grad-metal); border: 2px solid var(--gold);
    display: grid; place-items: center;
    box-shadow: 0 0 0 4px rgba(201,169,110,.07), inset 0 2px 8px rgba(0,0,0,.5);
}
.logo-mark svg { width: 26px; height: 26px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.logo-text .cn { font-size: 1.06rem; font-weight: 700; color: var(--text-hi); letter-spacing: .03em; }
.logo-text .en { font-size: .62rem; color: var(--gold); letter-spacing: .22em; font-weight: 600; }

.nav-menu { display: flex; align-items: center; gap: 2px; }
.nav-menu > li > a {
    display: block; padding: 10px 15px; font-size: .93rem; font-weight: 500;
    color: var(--text-mid); border-radius: var(--r-sm); transition: var(--t); position: relative;
}
.nav-menu > li > a::after {
    content: ''; position: absolute; left: 50%; bottom: 3px; transform: translateX(-50%);
    width: 0; height: 2px; background: var(--gold); transition: width .3s var(--ease); border-radius: 2px;
}
.nav-menu > li > a:hover, .nav-menu > li > a.active { color: var(--gold); background: rgba(201,169,110,.08); }
.nav-menu > li > a:hover::after, .nav-menu > li > a.active::after { width: 46%; }

.has-dropdown { position: relative; }
.has-dropdown > a { display: flex; align-items: center; gap: 5px; }
.has-dropdown > a .caret { width: 9px; height: 9px; fill: currentColor; transition: transform .3s var(--ease); }
.has-dropdown:hover > a .caret, .has-dropdown.open > a .caret { transform: rotate(180deg); }

.dropdown {
    position: absolute; top: calc(100% + 6px); left: 0; min-width: 232px;
    background: rgba(18, 23, 41, .98); border: 1px solid var(--line-dark);
    border-radius: var(--r-md); padding: 8px; box-shadow: var(--shadow-lg);
    opacity: 0; visibility: hidden; transform: translateY(12px); transition: var(--t);
}
.dropdown::before {
    content: ''; position: absolute; top: -6px; left: 0; right: 0; height: 6px;
}
.has-dropdown:hover .dropdown, .has-dropdown.open .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
    display: flex; align-items: center; gap: 11px; padding: 10px 12px;
    color: var(--text-mid); font-size: .89rem; border-radius: var(--r-sm); transition: var(--t);
}
.dropdown a svg { width: 17px; height: 17px; flex-shrink: 0; opacity: .72; transition: var(--t); }
.dropdown a:hover { background: rgba(201,169,110,.1); color: var(--gold-bright); padding-left: 17px; }
.dropdown a:hover svg { opacity: 1; }
.dropdown .tag-core {
    margin-left: auto; font-size: .62rem; padding: 2px 7px; border-radius: 20px;
    background: rgba(233,69,96,.16); color: #ff8095; font-weight: 700; letter-spacing: .04em; flex-shrink: 0;
}
.nav-cta { margin-left: 10px; }
/* 导航内金色按钮：优先级需压过 .nav-menu > li > a:hover 的下划线与文字变色 */
.nav-menu > li.nav-cta > a.btn { background: var(--grad-gold); color: var(--navy); }
.nav-menu > li.nav-cta > a.btn::after { display: none; }
.nav-menu > li.nav-cta > a.btn:hover {
    background: var(--grad-gold); color: var(--navy);
    transform: translateY(-2px); box-shadow: var(--shadow-gold);
}

.mobile-toggle {
    display: none; background: none; border: 1px solid var(--line-dark); border-radius: var(--r-sm);
    width: 44px; height: 40px; align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.mobile-toggle span { display: block; width: 19px; height: 2px; background: var(--text-hi); border-radius: 2px; transition: var(--t); }
.mobile-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
    background: var(--grad-hero); color: var(--text-mid);
    position: relative; overflow: hidden; padding-block: clamp(56px, 8vw, 104px) clamp(60px, 8vw, 108px);
}
.hero::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(201,169,110,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(201,169,110,.045) 1px, transparent 1px);
    background-size: 62px 62px;
    mask-image: radial-gradient(ellipse 78% 68% at 50% 42%, #000 25%, transparent 78%);
    -webkit-mask-image: radial-gradient(ellipse 78% 68% at 50% 42%, #000 25%, transparent 78%);
}
.hero::after {
    content: ''; position: absolute; width: 620px; height: 620px; right: -180px; top: -180px;
    background: radial-gradient(circle, rgba(201,169,110,.13) 0%, transparent 62%);
    pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: clamp(30px, 5vw, 68px); align-items: center; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 9px;
    padding: 7px 17px 7px 8px; border-radius: 40px; margin-bottom: 24px;
    background: rgba(201,169,110,.1); border: 1px solid rgba(201,169,110,.3);
    font-size: .82rem; color: var(--gold-bright); font-weight: 600; letter-spacing: .03em;
}
.hero-badge .dot {
    width: 24px; height: 24px; border-radius: 50%; background: var(--grad-gold);
    display: grid; place-items: center; flex-shrink: 0;
}
.hero-badge .dot svg { width: 13px; height: 13px; fill: var(--navy); }

.hero h1 {
    color: var(--text-hi);
    font-size: clamp(2rem, 4.6vw, 3.4rem);
    line-height: 1.2; letter-spacing: -.02em; margin-bottom: 22px;
}
.hero h1 .gold {
    background: var(--grad-gold); -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: var(--gold-bright);
}
.hero h1 .thin { display: block; font-size: .56em; font-weight: 500; color: var(--steel-2); letter-spacing: .01em; margin-top: 12px; }
.hero-sub { font-size: clamp(.94rem, 1.35vw, 1.05rem); line-height: 1.95; color: var(--text-mid); max-width: 600px; margin-bottom: 32px; }
.hero-sub strong { color: var(--gold-bright); font-weight: 600; }
.hero-btns { display: flex; gap: 13px; flex-wrap: wrap; margin-bottom: 46px; }

.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: rgba(201,169,110,.14); border-radius: var(--r-md); overflow: hidden; }
.stat-cell { background: rgba(13, 17, 30, .78); padding: 20px 18px; transition: var(--t); }
.stat-cell:hover { background: rgba(201,169,110,.09); }
.stat-num {
    font-size: clamp(1.5rem, 3vw, 2.05rem); font-weight: 800; line-height: 1.1;
    color: var(--text-hi); letter-spacing: -.02em; display: flex; align-items: baseline; gap: 2px;
}
.stat-num .unit { font-size: .48em; font-weight: 700; color: var(--gold); letter-spacing: 0; }
.stat-label { font-size: .8rem; color: var(--steel); margin-top: 7px; letter-spacing: .05em; }

/* Hero visual */
.hero-visual { position: relative; display: grid; place-items: center; }
.hero-visual .ring {
    position: absolute; width: min(440px, 88%); aspect-ratio: 1; border-radius: 50%;
    border: 1px solid rgba(201,169,110,.2);
}
.hero-visual .ring.r2 { width: min(350px, 70%); border-color: rgba(201,169,110,.13); border-style: dashed; }
.hero-visual .glow {
    position: absolute; width: min(400px, 80%); aspect-ratio: 1; border-radius: 50%;
    background: radial-gradient(circle, rgba(201,169,110,.16) 0%, transparent 68%);
}
.drill-hero { width: 100%; max-width: 540px; position: relative; z-index: 2; filter: drop-shadow(0 22px 44px rgba(0,0,0,.55)); }
.hero-caption {
    position: relative; z-index: 3; margin-top: 20px; display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
}
.chip {
    font-size: .76rem; padding: 6px 14px; border-radius: 40px; letter-spacing: .04em;
    background: rgba(201,169,110,.1); border: 1px solid rgba(201,169,110,.24); color: var(--gold-bright);
}

/* ---------- Core business ---------- */
.core-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.core-card {
    position: relative; overflow: hidden; border-radius: var(--r-lg); padding: clamp(28px, 3.4vw, 44px);
    background: var(--grad-metal); border: 1px solid var(--line-dark); color: var(--text-mid);
    transition: var(--t); display: flex; flex-direction: column;
}
.core-card::before {
    content: ''; position: absolute; inset: 0; opacity: 0; transition: opacity .4s var(--ease);
    background: radial-gradient(circle at 82% 14%, rgba(201,169,110,.2), transparent 58%);
}
.core-card:hover { transform: translateY(-7px); border-color: rgba(201,169,110,.45); box-shadow: var(--shadow-lg); }
.core-card:hover::before { opacity: 1; }
.core-card > * { position: relative; z-index: 2; }
.core-card .num-badge {
    position: absolute; top: 14px; right: 22px; z-index: 1;
    font-size: 5.4rem; font-weight: 800; line-height: 1; color: rgba(255,255,255,.045); letter-spacing: -.04em;
}
.core-card .head { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.core-card .icon-box {
    width: 62px; height: 62px; border-radius: var(--r-md); flex-shrink: 0;
    background: rgba(201,169,110,.13); border: 1px solid rgba(201,169,110,.3);
    display: grid; place-items: center;
}
.core-card .icon-box svg { width: 40px; height: 40px; }
.core-card h3 { color: var(--text-hi); font-size: clamp(1.2rem, 2.1vw, 1.5rem); }
.core-card h3 .en { display: block; font-size: .6rem; letter-spacing: .2em; color: var(--gold); font-weight: 700; margin-top: 6px; }
.core-card > p { font-size: .92rem; line-height: 1.9; margin-bottom: 22px; }
.core-points { display: grid; gap: 9px; margin-bottom: 26px; }
.core-points li { display: flex; gap: 10px; font-size: .87rem; color: var(--steel-2); align-items: flex-start; }
.core-points li svg { width: 15px; height: 15px; fill: var(--gold); flex-shrink: 0; margin-top: 4px; }
.core-card .foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 22px; border-top: 1px solid rgba(201,169,110,.16); }
.core-link { display: inline-flex; align-items: center; gap: 8px; color: var(--gold); font-weight: 700; font-size: .89rem; transition: var(--t); }
.core-link svg { width: 15px; height: 15px; fill: currentColor; transition: transform .3s var(--ease); }
.core-link:hover { color: var(--gold-bright); }
.core-link:hover svg { transform: translateX(5px); }
.core-meta { font-size: .78rem; color: var(--steel); }

/* ---------- Product cards ---------- */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
    background: var(--white); border: 1px solid #e6e8ee; border-radius: var(--r-md);
    overflow: hidden; transition: var(--t); display: flex; flex-direction: column; position: relative;
}
.product-card::after {
    content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
    background: var(--grad-gold); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease);
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: rgba(201,169,110,.5); }
.product-card:hover::after { transform: scaleX(1); }
.product-thumb {
    height: 178px; background: var(--grad-metal); position: relative;
    display: grid; place-items: center; overflow: hidden;
}
.product-thumb::before {
    content: ''; position: absolute; inset: 0;
    background-image: repeating-linear-gradient(135deg, rgba(255,255,255,.028) 0 2px, transparent 2px 11px);
}
.product-thumb svg { width: 76%; height: auto; position: relative; z-index: 2; transition: transform .5s var(--ease); }
.product-card:hover .product-thumb svg { transform: scale(1.07) translateX(-4px); }
.product-flag {
    position: absolute; top: 12px; left: 12px; z-index: 3;
    font-size: .68rem; font-weight: 700; letter-spacing: .07em; padding: 4px 11px; border-radius: 4px;
    background: rgba(233,69,96,.92); color: #fff;
}
.product-flag.gold { background: var(--grad-gold); color: var(--navy); }
.product-flag.mute { background: rgba(255,255,255,.14); color: var(--text-hi); backdrop-filter: blur(4px); }
.product-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product-body h3 { font-size: 1.08rem; margin-bottom: 9px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.product-body h3 .en { display: block; font-size: .62rem; letter-spacing: .16em; color: var(--text-dim); font-weight: 600; margin-top: 4px; text-transform: uppercase; }
.product-body h3 .arrow { width: 26px; height: 26px; border-radius: 50%; border: 1px solid #e2e4ea; display: grid; place-items: center; flex-shrink: 0; transition: var(--t); }
.product-body h3 .arrow svg { width: 12px; height: 12px; fill: var(--text-dim); transition: var(--t); }
.product-card:hover h3 .arrow { background: var(--gold); border-color: var(--gold); }
.product-card:hover h3 .arrow svg { fill: var(--navy); transform: translateX(1px); }
.product-body p { font-size: .87rem; color: var(--text-body); line-height: 1.8; margin-bottom: 16px; }
.product-spec-mini { margin-top: auto; display: flex; gap: 8px; flex-wrap: wrap; padding-top: 14px; border-top: 1px dashed #e6e8ee; }
.product-spec-mini span { font-size: .73rem; color: var(--text-dim); background: var(--bg-soft); padding: 3px 10px; border-radius: 4px; }

/* ---------- Process timeline ---------- */
.process-wrap { position: relative; }
.process-line { position: absolute; left: 0; right: 0; top: 34px; height: 2px; background: rgba(201,169,110,.18); z-index: 0; }
.process-line::after {
    content: ''; position: absolute; inset: 0; width: var(--progress, 0%);
    background: var(--grad-gold); transition: width 1.4s var(--ease);
}
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; position: relative; z-index: 2; }
.process-step { text-align: center; }
.process-step .node {
    width: 68px; height: 68px; margin: 0 auto 18px; border-radius: 50%;
    background: var(--navy-2); border: 2px solid rgba(201,169,110,.32);
    display: grid; place-items: center; transition: var(--t); position: relative;
}
.process-step .node svg { width: 30px; height: 30px; }
.process-step:hover .node { border-color: var(--gold); background: rgba(201,169,110,.14); transform: translateY(-4px); box-shadow: var(--shadow-gold); }
.process-step .idx {
    position: absolute; top: -8px; right: -8px; width: 24px; height: 24px; border-radius: 50%;
    background: var(--grad-gold); color: var(--navy); font-size: .72rem; font-weight: 800;
    display: grid; place-items: center;
}
.process-step h4 { color: var(--text-hi); font-size: .96rem; margin-bottom: 7px; }
.process-step p { font-size: .8rem; color: var(--steel); line-height: 1.7; }

/* ---------- Spec table ---------- */
.spec-toolbar { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 30px; }
.spec-tab {
    padding: 10px 24px; border-radius: 40px; border: 1px solid #dcdfe6; background: var(--white);
    font-size: .87rem; font-weight: 600; color: var(--text-body); transition: var(--t);
}
.spec-tab:hover { border-color: var(--gold); color: var(--gold-dim); }
.spec-tab.active { background: var(--navy); border-color: var(--navy); color: var(--gold-bright); box-shadow: var(--shadow-sm); }
.spec-panel { display: none; }
.spec-panel.active { display: block; animation: panelIn .45s var(--ease); }
@keyframes panelIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

.table-scroll { overflow-x: auto; border-radius: var(--r-md); box-shadow: var(--shadow-sm); border: 1px solid #e6e8ee; background: var(--white); }
table.data { width: 100%; border-collapse: collapse; min-width: 620px; font-size: .87rem; }
table.data thead th {
    background: var(--navy); color: var(--text-hi); font-weight: 600; text-align: left;
    padding: 14px 18px; font-size: .83rem; letter-spacing: .04em; white-space: nowrap;
}
table.data thead th:first-child { border-radius: 0; }
table.data tbody td { padding: 13px 18px; border-bottom: 1px solid #eef0f4; color: var(--text-body); vertical-align: middle; }
table.data tbody tr:last-child td { border-bottom: none; }
table.data tbody tr:nth-child(even) { background: #fafbfc; }
table.data tbody tr:hover { background: rgba(201,169,110,.09); }
table.data td.model { font-weight: 700; color: var(--text-dark); white-space: nowrap; }
table.data td .hl { color: var(--gold-dim); font-weight: 700; }
.table-note { font-size: .8rem; color: var(--text-dim); margin-top: 14px; text-align: center; }

/* ---------- Selection guide ---------- */
.guide-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.guide-card {
    background: var(--white); border: 1px solid #e6e8ee; border-radius: var(--r-md);
    padding: 26px 22px; transition: var(--t); position: relative; overflow: hidden;
}
.guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(201,169,110,.5); }
.guide-card .g-icon {
    width: 50px; height: 50px; border-radius: var(--r-sm); margin-bottom: 16px;
    background: rgba(201,169,110,.12); display: grid; place-items: center;
}
.guide-card .g-icon svg { width: 27px; height: 27px; }
.guide-card h4 { font-size: .98rem; margin-bottom: 9px; }
.guide-card p { font-size: .83rem; color: var(--text-body); line-height: 1.8; }
.guide-card .g-num {
    position: absolute; top: 10px; right: 14px; font-size: 2.6rem; font-weight: 800;
    color: rgba(20,24,42,.05); line-height: 1;
}

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: clamp(32px, 5vw, 66px); align-items: center; }
.about-visual { position: relative; }
.about-frame {
    border-radius: var(--r-lg); overflow: hidden; background: var(--grad-hero);
    border: 1px solid var(--line-dark); box-shadow: var(--shadow-lg); padding: clamp(18px, 3vw, 34px);
}
.about-frame svg { width: 100%; height: auto; }
.about-badge {
    position: absolute; right: clamp(-8px, -1vw, -18px); bottom: -22px;
    background: var(--grad-gold); color: var(--navy); border-radius: var(--r-md);
    padding: 16px 24px; box-shadow: var(--shadow-gold); text-align: center; min-width: 148px;
}
.about-badge .big { display: block; font-size: 1.7rem; font-weight: 800; line-height: 1.1; letter-spacing: -.02em; }
.about-badge .small { display: block; font-size: .78rem; font-weight: 700; letter-spacing: .05em; margin-top: 4px; }
.about-content .section-title { text-align: left; margin-bottom: 24px; }
.about-content .section-title h2::after { left: 0; transform: none; }
.about-content p { font-size: .93rem; line-height: 1.95; margin-bottom: 16px; color: var(--text-body); }
.about-content p strong { color: var(--text-dark); font-weight: 700; }
.about-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 11px; margin: 26px 0 30px; }
.about-features li { display: flex; align-items: center; gap: 10px; font-size: .87rem; color: var(--text-dark); font-weight: 500; }
.about-features li svg { width: 19px; height: 19px; flex-shrink: 0; }

/* ---------- Advantages ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.adv-card {
    padding: 30px 24px; border-radius: var(--r-md); text-align: center;
    background: rgba(255,255,255,.035); border: 1px solid rgba(201,169,110,.16); transition: var(--t);
}
.adv-card:hover { background: rgba(201,169,110,.1); border-color: rgba(201,169,110,.42); transform: translateY(-6px); }
.adv-card .a-icon { width: 58px; height: 58px; margin: 0 auto 18px; display: grid; place-items: center; }
.adv-card .a-icon svg { width: 100%; height: 100%; }
.adv-card h4 { color: var(--text-hi); font-size: 1rem; margin-bottom: 10px; }
.adv-card p { font-size: .83rem; line-height: 1.8; color: var(--steel-2); }
.adv-card .metric { display: block; margin-top: 14px; font-size: 1.32rem; font-weight: 800; color: var(--gold); letter-spacing: -.02em; }

/* ---------- Applications ---------- */
.apps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.app-card {
    background: var(--white); border: 1px solid #e6e8ee; border-radius: var(--r-md);
    padding: 26px 24px; transition: var(--t); display: flex; gap: 18px; align-items: flex-start;
}
.app-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(201,169,110,.5); }
.app-card .ap-icon {
    width: 52px; height: 52px; border-radius: var(--r-sm); flex-shrink: 0;
    background: var(--grad-metal); display: grid; place-items: center;
}
.app-card .ap-icon svg { width: 28px; height: 28px; }
.app-card h4 { font-size: .98rem; margin-bottom: 7px; }
.app-card p { font-size: .82rem; color: var(--text-body); line-height: 1.75; }
.app-card .ap-parts { display: block; margin-top: 9px; font-size: .76rem; color: var(--gold-dim); font-weight: 600; }

/* ---------- News ---------- */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.news-col h3 {
    font-size: 1.12rem; margin-bottom: 20px; padding-bottom: 13px;
    border-bottom: 2px solid #e8eaef; display: flex; align-items: center; gap: 10px;
}
.news-col h3 svg { width: 19px; height: 19px; fill: var(--gold); }
.news-item {
    display: flex; gap: 18px; padding: 17px 0; border-bottom: 1px dashed #e4e6ec; transition: var(--t);
}
.news-item:last-child { border-bottom: none; }
.news-item:hover { transform: translateX(5px); }
.news-date {
    flex-shrink: 0; width: 60px; text-align: center; padding: 8px 0; border-radius: var(--r-sm);
    background: var(--bg-soft); transition: var(--t);
}
.news-item:hover .news-date { background: var(--navy); }
.news-date .day { display: block; font-size: 1.32rem; font-weight: 800; color: var(--text-dark); line-height: 1; transition: var(--t); }
.news-date .ym { display: block; font-size: .66rem; color: var(--text-dim); margin-top: 4px; letter-spacing: .04em; transition: var(--t); }
.news-item:hover .news-date .day { color: var(--gold-bright); }
.news-item:hover .news-date .ym { color: var(--steel); }
.news-info h4 { font-size: .95rem; margin-bottom: 6px; transition: var(--t); }
.news-item:hover .news-info h4 { color: var(--gold-dim); }
.news-info p { font-size: .82rem; color: var(--text-body); line-height: 1.75; }

/* ---------- CTA / Contact ---------- */
.cta { background: var(--grad-hero); color: var(--text-mid); position: relative; overflow: hidden; padding-block: clamp(54px, 7vw, 88px); }
.cta::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 14% 50%, rgba(201,169,110,.13), transparent 52%);
}
.cta .container { position: relative; z-index: 2; }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 60px); align-items: center; }
.cta h2 { color: var(--text-hi); font-size: clamp(1.55rem, 3.1vw, 2.2rem); margin-bottom: 18px; }
.cta h2 .gold { color: var(--gold-bright); }
.cta p { font-size: .93rem; line-height: 1.9; margin-bottom: 26px; }
.contact-list { display: grid; gap: 14px; }
.contact-row {
    display: flex; align-items: center; gap: 17px; padding: 17px 22px;
    background: rgba(255,255,255,.045); border: 1px solid rgba(201,169,110,.18);
    border-radius: var(--r-md); transition: var(--t);
}
.contact-row:hover { background: rgba(201,169,110,.11); border-color: rgba(201,169,110,.42); transform: translateX(6px); }
.contact-row .c-icon {
    width: 46px; height: 46px; border-radius: 50%; flex-shrink: 0;
    background: rgba(201,169,110,.15); border: 1px solid rgba(201,169,110,.3); display: grid; place-items: center;
}
.contact-row .c-icon svg { width: 20px; height: 20px; fill: var(--gold); }
.contact-row .label { font-size: .76rem; color: var(--steel); letter-spacing: .06em; margin-bottom: 3px; }
.contact-row .value { font-size: 1.02rem; color: var(--text-hi); font-weight: 700; word-break: break-all; }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: var(--text-mid); padding-top: clamp(44px, 6vw, 64px); }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.25fr; gap: clamp(26px, 3.6vw, 44px); padding-bottom: 44px; }
.footer-col h4 { color: var(--text-hi); font-size: .98rem; margin-bottom: 20px; padding-bottom: 11px; position: relative; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: var(--gold); border-radius: 2px; }
.footer-col p { font-size: .85rem; line-height: 1.9; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 11px; }
.footer-col ul li a {
    font-size: .86rem; color: var(--text-mid); display: inline-flex; align-items: center; gap: 7px; transition: var(--t);
}
.footer-col ul li a::before { content: '\203A'; color: var(--gold-dim); font-size: 1rem; line-height: 1; }
.footer-col ul li a:hover { color: var(--gold-bright); padding-left: 5px; }
.footer-logo { display: flex; align-items: center; gap: 11px; margin-bottom: 18px; }
.footer-logo .logo-mark { width: 40px; height: 40px; }
.footer-logo .logo-mark svg { width: 23px; height: 23px; }
.footer-logo .name { color: var(--text-hi); font-weight: 700; font-size: 1rem; }
.footer-contact { font-size: .85rem; margin-bottom: 13px; display: flex; align-items: flex-start; gap: 11px; line-height: 1.7; }
.footer-contact svg { width: 15px; height: 15px; fill: var(--gold); flex-shrink: 0; margin-top: 4px; }
.footer-bottom {
    border-top: 1px solid rgba(201,169,110,.12); padding: 20px 0; text-align: center;
    font-size: .79rem; color: var(--text-dim);
}
.footer-bottom a { color: var(--text-mid); transition: var(--t); }
.footer-bottom a:hover { color: var(--gold); }

/* ---------- Back to top ---------- */
.back-to-top {
    position: fixed; right: 26px; bottom: 26px; width: 48px; height: 48px; border-radius: 50%;
    background: var(--grad-gold); color: var(--navy); border: none; z-index: 900;
    display: grid; place-items: center; opacity: 0; visibility: hidden; transform: translateY(14px);
    transition: var(--t); box-shadow: var(--shadow-md);
}
.back-to-top svg { width: 18px; height: 18px; fill: var(--navy); }
.back-to-top.visible { opacity: 1; visibility: visible; transform: none; }
.back-to-top:hover { transform: translateY(-5px); box-shadow: var(--shadow-gold); }

/* ============================================================
   Product detail pages
   ============================================================ */
.page-hero {
    background: var(--grad-hero); color: var(--text-mid); padding-block: clamp(38px, 5.4vw, 62px);
    position: relative; overflow: hidden;
}
.page-hero::before {
    content: ''; position: absolute; inset: 0;
    background-image: linear-gradient(rgba(201,169,110,.05) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(201,169,110,.05) 1px, transparent 1px);
    background-size: 54px 54px;
    mask-image: radial-gradient(ellipse 70% 100% at 70% 50%, #000, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 100% at 70% 50%, #000, transparent 75%);
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 9px; font-size: .82rem; color: var(--steel); margin-bottom: 20px; flex-wrap: wrap; }
.breadcrumb a { color: var(--gold); transition: var(--t); }
.breadcrumb a:hover { color: var(--gold-bright); }
.breadcrumb .sep { color: rgba(201,169,110,.4); }
.breadcrumb .cur { color: var(--text-hi); font-weight: 600; }
.page-hero h1 { color: var(--text-hi); font-size: clamp(1.65rem, 3.6vw, 2.5rem); margin-bottom: 12px; }
.page-hero .en-title { display: block; font-size: .76rem; letter-spacing: .24em; color: var(--gold); font-weight: 700; margin-bottom: 14px; text-transform: uppercase; }
.page-hero .hero-desc { font-size: .93rem; line-height: 1.9; max-width: 760px; color: var(--text-mid); }

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 4.4vw, 56px); align-items: start; padding-block: clamp(46px, 6vw, 76px); }
.showcase .main-img {
    background: var(--grad-metal); border: 1px solid var(--line-dark); border-radius: var(--r-lg);
    padding: clamp(20px, 3vw, 38px); position: relative; overflow: hidden; min-height: 340px;
    display: grid; place-items: center; box-shadow: var(--shadow-md);
}
.showcase .main-img::before {
    content: ''; position: absolute; inset: 14px; border: 1px solid rgba(201,169,110,.13); border-radius: var(--r-md); pointer-events: none;
}
.showcase .main-img svg.art { width: 100%; height: auto; position: relative; z-index: 2; }
.showcase .corner-tag {
    position: absolute; top: 20px; left: 20px; z-index: 3; font-size: .72rem; font-weight: 700;
    letter-spacing: .07em; padding: 5px 13px; border-radius: 4px; background: rgba(233,69,96,.92); color: #fff;
}
.showcase .corner-tag.gold { background: var(--grad-gold); color: var(--navy); }
.thumb-row { display: flex; gap: 11px; margin-top: 14px; }
.thumb {
    width: 76px; height: 76px; border-radius: var(--r-sm); background: var(--grad-metal);
    border: 2px solid transparent; display: grid; place-items: center; cursor: pointer; transition: var(--t); padding: 10px;
}
.thumb svg { width: 100%; height: auto; }
.thumb:hover, .thumb.active { border-color: var(--gold); box-shadow: var(--shadow-gold); }

.detail-info .d-title { font-size: clamp(1.35rem, 2.6vw, 1.85rem); margin-bottom: 10px; }
.detail-info .d-en { display: block; font-size: .74rem; letter-spacing: .2em; color: var(--gold-dim); font-weight: 700; margin-bottom: 16px; text-transform: uppercase; }
.detail-info .d-desc { font-size: .92rem; line-height: 1.95; color: var(--text-body); padding-bottom: 24px; margin-bottom: 24px; border-bottom: 1px solid #e8eaef; }
.quick-specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 11px; margin-bottom: 26px; }
.qs-item { background: var(--bg-soft); border-left: 3px solid var(--gold); padding: 12px 15px; border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.qs-item .k { font-size: .75rem; color: var(--text-dim); margin-bottom: 4px; letter-spacing: .03em; }
.qs-item .v { font-size: .9rem; color: var(--text-dark); font-weight: 700; }
.detail-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }
.hotline {
    display: flex; align-items: center; gap: 16px; padding: 18px 22px;
    background: var(--grad-metal); border-radius: var(--r-md); border: 1px solid var(--line-dark);
}
.hotline .h-icon {
    width: 48px; height: 48px; border-radius: 50%; background: rgba(201,169,110,.15);
    border: 1px solid rgba(201,169,110,.32); display: grid; place-items: center; flex-shrink: 0;
}
.hotline .h-icon svg { width: 21px; height: 21px; fill: var(--gold); }
.hotline .label { font-size: .76rem; color: var(--steel); letter-spacing: .05em; }
.hotline .value { font-size: 1.18rem; color: var(--text-hi); font-weight: 800; letter-spacing: .01em; }

/* Tabs */
.tabs { margin-top: clamp(30px, 4vw, 52px); }
.tab-heads { display: flex; gap: 4px; border-bottom: 2px solid #e8eaef; margin-bottom: 32px; overflow-x: auto; scrollbar-width: none; }
.tab-heads::-webkit-scrollbar { display: none; }
.tab-head {
    padding: 13px 26px; font-size: .93rem; font-weight: 600; color: var(--text-dim);
    cursor: pointer; transition: var(--t); border-bottom: 3px solid transparent; margin-bottom: -2px; white-space: nowrap;
    background: none; border-top: none; border-left: none; border-right: none;
}
.tab-head:hover { color: var(--gold-dim); }
.tab-head.active { color: var(--gold-dim); border-bottom-color: var(--gold); }
.tab-pane { display: none; }
.tab-pane.active { display: block; animation: panelIn .45s var(--ease); }
.tab-pane h3 { font-size: 1.13rem; margin: 28px 0 15px; display: flex; align-items: center; gap: 10px; }
.tab-pane h3:first-child { margin-top: 0; }
.tab-pane h3::before { content: ''; width: 4px; height: 18px; background: var(--grad-gold); border-radius: 2px; flex-shrink: 0; }
.tab-pane h4 { font-size: .99rem; margin: 22px 0 12px; }
.tab-pane p { font-size: .92rem; line-height: 1.95; color: var(--text-body); margin-bottom: 15px; }
.tab-pane strong { color: var(--text-dark); font-weight: 700; }
.tab-pane ul.list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; margin: 16px 0 22px; }
.tab-pane ul.list li {
    padding: 11px 16px; background: var(--bg-soft); border-radius: var(--r-sm);
    font-size: .86rem; color: var(--text-body); display: flex; align-items: center; gap: 9px;
}
.tab-pane ul.list li::before { content: ''; width: 7px; height: 7px; border-radius: 2px; background: var(--gold); transform: rotate(45deg); flex-shrink: 0; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 22px 0; }
.feature-card {
    background: var(--bg-soft); border: 1px solid transparent; border-radius: var(--r-md);
    padding: 26px 20px; text-align: center; transition: var(--t);
}
.feature-card:hover { border-color: rgba(201,169,110,.55); box-shadow: var(--shadow-sm); transform: translateY(-5px); background: var(--white); }
.feature-card .f-icon {
    width: 52px; height: 52px; margin: 0 auto 15px; border-radius: 50%;
    background: rgba(201,169,110,.14); display: grid; place-items: center;
}
.feature-card .f-icon svg { width: 26px; height: 26px; }
.feature-card h4 { font-size: .95rem; margin-bottom: 9px; }
.feature-card p { font-size: .82rem; color: var(--text-body); line-height: 1.7; margin: 0; }

/* Related */
.related { background: var(--bg-soft); padding-block: clamp(48px, 6.4vw, 78px); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1100px) {
    .products-grid, .apps-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
    .adv-grid, .guide-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); gap: 30px 22px; }
    .process-line { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 960px) {
    :root { --header-h: 66px; }
    .nav-menu {
        position: fixed; top: calc(var(--header-h) + 34px); left: 0; right: 0;
        background: rgba(14, 18, 33, .99); flex-direction: column; align-items: stretch; gap: 0;
        padding: 10px 18px 22px; max-height: 0; overflow: hidden; transition: max-height .45s var(--ease);
        border-bottom: 1px solid var(--line-dark); backdrop-filter: blur(14px);
    }
    .nav-menu.open { max-height: 78vh; overflow-y: auto; }
    .nav-menu > li { width: 100%; border-bottom: 1px solid rgba(201,169,110,.08); }
    .nav-menu > li > a { padding: 15px 4px; border-radius: 0; font-size: .95rem; }
    .nav-menu > li > a::after { display: none; }
    .has-dropdown > a { justify-content: space-between; }
    .has-dropdown > a .caret { margin-left: auto; }
    .dropdown {
        position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none;
        border: none; background: rgba(201,169,110,.05); padding: 4px 8px; min-width: 0;
        max-height: 0; overflow: hidden; transition: max-height .4s var(--ease); border-radius: var(--r-sm);
    }
    .has-dropdown.open .dropdown { max-height: 460px; }
    .has-dropdown:hover .dropdown { max-height: 0; }
    .has-dropdown.open:hover .dropdown, .has-dropdown.open .dropdown { max-height: 460px; }
    .dropdown a { padding: 12px 10px; font-size: .88rem; }
    .dropdown a:hover { padding-left: 16px; }
    .mobile-toggle { display: flex; }
    .nav-cta { margin: 14px 0 0; }
    .nav-cta .btn { width: 100%; }
    .top-bar .info { display: none; }
    .top-bar .container { justify-content: center; }

    .hero-grid, .about-grid, .cta-grid, .detail-grid { grid-template-columns: 1fr; }
    .hero-visual { order: -1; margin-bottom: 8px; }
    .hero-stats { grid-template-columns: repeat(3, 1fr); }
    .core-grid { grid-template-columns: 1fr; }
    .about-badge { right: 14px; bottom: -18px; }
    .about-content .section-title { text-align: left; }
}

@media (max-width: 680px) {
    .products-grid, .apps-grid, .related-grid, .news-grid,
    .adv-grid, .guide-grid, .about-features, .quick-specs,
    .tab-pane ul.list, .feature-grid, .process-steps { grid-template-columns: 1fr; }
    .hero-stats { grid-template-columns: 1fr; }
    .stat-cell { display: flex; align-items: baseline; gap: 12px; padding: 15px 18px; }
    .stat-num { font-size: 1.4rem; }
    .stat-label { margin-top: 0; }
    .core-card .num-badge { font-size: 3.6rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .tab-head { padding: 12px 16px; font-size: .86rem; }
    .back-to-top { right: 16px; bottom: 16px; width: 44px; height: 44px; }
    .app-card { flex-direction: column; gap: 14px; }
}