/* ============================================================
   OSETTO 聚創智造 — 官方網站樣式
   ============================================================ */

:root{
  --ink:#111315;
  --ink-2:#2c3033;
  --muted:#6b7177;
  --muted-2:#9aa1a7;
  --line:#e3e5e8;
  --line-2:#eef0f2;
  --bg:#ffffff;
  --bg-soft:#f4f5f7;
  --bg-soft-2:#eceef1;
  --gold:#b08d57;
  --gold-soft:#c9a97a;
  --red:#e0231b;
  --dark:#16181a;
  --dark-2:#1f2225;
  --radius:18px;
  --radius-lg:28px;
  --shadow-sm:0 2px 10px rgba(17,19,21,.05);
  --shadow:0 14px 40px rgba(17,19,21,.09);
  --shadow-lg:0 30px 80px rgba(17,19,21,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:1200px;
  /* 拉丁字母用 Barlow（下載量小），中文字元自動落到系統字型 —— 瀏覽器會逐字選字型 */
  --font:"Barlow","PingFang TC","Noto Sans TC","Hiragino Sans TC","Microsoft JhengHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.75;letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,video{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{line-height:1.25;letter-spacing:.01em;margin:0;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px;}

.wrap{width:min(100% - 44px,var(--maxw));margin-inline:auto;}
.skip{
  position:absolute;left:-9999px;top:0;z-index:1000;
  background:var(--ink);color:#fff;padding:14px 22px;border-radius:0 0 10px 0;
  font-size:14px;font-weight:600;
}
.skip:focus{left:0;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ---------- 進場動畫 ---------- */
/* 未啟用 JS 時內容維持可見，避免因指令碼失效而整頁空白 */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease);}
.js .reveal.in{opacity:1;transform:none;}
.js .reveal[data-d="1"]{transition-delay:.08s}
.js .reveal[data-d="2"]{transition-delay:.16s}
.js .reveal[data-d="3"]{transition-delay:.24s}
.js .reveal[data-d="4"]{transition-delay:.32s}
.js .reveal[data-d="5"]{transition-delay:.4s}
@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 導覽列 ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:900;
  background:rgba(255,255,255,.72);backdrop-filter:blur(18px) saturate(1.4);
  -webkit-backdrop-filter:blur(18px) saturate(1.4);
  border-bottom:1px solid transparent;transition:border-color .4s var(--ease),background .4s var(--ease);
}
.nav.scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.9);}
.nav__in{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:flex;align-items:center;gap:11px;margin-right:auto;}
.brand__mark{width:34px;height:34px;flex:none;}
.brand__txt{display:flex;flex-direction:column;line-height:1.15;}
.brand__en{font-size:16px;font-weight:800;letter-spacing:.26em;}
.brand__zh{font-size:10px;color:var(--muted);letter-spacing:.14em;}
.nav__links{display:flex;gap:30px;align-items:center;}
.nav__links a{font-size:14px;font-weight:500;color:var(--ink-2);position:relative;padding:6px 0;transition:color .3s;}
.nav__links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1.5px;
  background:var(--gold);transition:width .35s var(--ease);
}
.nav__links a:hover{color:var(--ink);}
.nav__links a:hover::after{width:100%;}
.nav__cta{
  display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:100px;
  background:var(--ink);color:#fff;font-size:13.5px;font-weight:600;letter-spacing:.05em;
  transition:transform .3s var(--ease),background .3s;
}
.nav__cta:hover{background:var(--gold);transform:translateY(-2px);}
.burger{display:none;width:42px;height:42px;border-radius:10px;position:relative;}
.burger span{
  position:absolute;left:11px;width:20px;height:1.6px;background:var(--ink);
  transition:transform .35s var(--ease),opacity .25s;
}
.burger span:nth-child(1){top:15px}
.burger span:nth-child(2){top:20.5px}
.burger span:nth-child(3){top:26px}
body.menu-open .burger span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
body.menu-open .burger span:nth-child(2){opacity:0}
body.menu-open .burger span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;padding:110px 0 60px;}
.hero__bg{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(120% 90% at 78% 18%,#ffffff 0%,#f2f3f5 42%,#e6e8ec 70%,#dcdfe4 100%),
    linear-gradient(180deg,#fafbfc,#e9ebee);
}
.hero__bg::after{
  content:"";position:absolute;inset:auto 0 0 0;height:38%;
  background:linear-gradient(180deg,transparent,rgba(210,214,219,.85));
}
.hero__glow{
  position:absolute;width:820px;height:820px;right:-160px;top:-220px;z-index:0;
  background:radial-gradient(circle,rgba(176,141,87,.16),transparent 62%);
  filter:blur(10px);pointer-events:none;
}
.hero__in{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.3em;
  color:var(--muted);text-transform:uppercase;margin-bottom:26px;
}
.hero__eyebrow::before{content:"";width:34px;height:1px;background:var(--gold);}
.hero h1{font-size:clamp(38px,5.6vw,70px);font-weight:800;letter-spacing:-.01em;line-height:1.1;}
.hero h1 .thin{font-weight:300;color:var(--ink-2);}
.hero h1 .accent{color:var(--red);}
.hero__sub{
  margin-top:22px;font-size:clamp(15px,1.5vw,18px);color:var(--muted);max-width:34em;
}
.hero__slogan{
  margin-top:14px;font-size:14px;letter-spacing:.42em;color:var(--gold);font-weight:600;
}
.hero__btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:40px;}
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:15px 30px;border-radius:100px;
  font-size:14.5px;font-weight:600;letter-spacing:.05em;transition:all .35s var(--ease);
}
.btn--dark{background:var(--ink);color:#fff;box-shadow:0 10px 26px rgba(17,19,21,.2);}
.btn--dark:hover{background:var(--gold);transform:translateY(-3px);box-shadow:0 16px 34px rgba(176,141,87,.35);}
.btn--ghost{border:1px solid var(--ink);color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:#fff;transform:translateY(-3px);}
.btn--line{background:#06C755;color:#fff;}
.btn--line:hover{filter:brightness(1.08);transform:translateY(-3px);}
.hero__stats{display:flex;gap:38px;margin-top:52px;flex-wrap:wrap;}
.hero__stat b{display:block;font-size:30px;font-weight:800;letter-spacing:-.01em;}
.hero__stat span{font-size:12.5px;color:var(--muted);letter-spacing:.12em;}
.hero__art{position:relative;}
.hero__art img{
  width:100%;height:auto;border-radius:var(--radius-lg);
  box-shadow:0 30px 70px rgba(17,19,21,.2);
}
.hero__scroll{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:10.5px;letter-spacing:.28em;color:var(--muted);
}
.hero__scroll i{width:1px;height:44px;background:linear-gradient(180deg,var(--gold),transparent);animation:sd 2.2s var(--ease) infinite;}
@keyframes sd{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- 區塊通用 ---------- */
section{position:relative;}
.sec{padding:clamp(72px,9vw,128px) 0;}
.sec--soft{background:var(--bg-soft);}
.sec--dark{background:var(--dark);color:#fff;}
.sec--dark .sec__title{color:#fff;}
.sec--dark .sec__lead{color:rgba(255,255,255,.62);}
.sec__head{max-width:760px;margin-bottom:clamp(38px,5vw,66px);}
.sec__head--center{margin-inline:auto;text-align:center;}
.sec__eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:11.5px;letter-spacing:.3em;
  color:var(--gold);text-transform:uppercase;font-weight:600;margin-bottom:16px;
}
.sec__head--center .sec__eyebrow{justify-content:center;}
.sec__title{font-size:clamp(27px,3.6vw,44px);font-weight:800;letter-spacing:-.005em;}
.sec__lead{margin-top:18px;color:var(--muted);font-size:clamp(14.5px,1.4vw,16.5px);}

/* ---------- 品牌價值 ---------- */
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;}
.value{background:var(--bg);padding:36px 28px;transition:background .4s var(--ease);}
.value:hover{background:var(--bg-soft);}
.value__ico{width:38px;height:38px;color:var(--gold);margin-bottom:18px;}
.value h3{font-size:17px;margin-bottom:9px;}
.value p{font-size:13.8px;color:var(--muted);line-height:1.8;}

/* ---------- 產品 ---------- */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
.filter{
  padding:9px 20px;border-radius:100px;border:1px solid var(--line);font-size:13.5px;
  font-weight:500;color:var(--muted);transition:all .3s var(--ease);background:var(--bg);
}
.filter:hover{border-color:var(--muted-2);color:var(--ink);}
.filter.on{background:var(--ink);border-color:var(--ink);color:#fff;}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .4s,opacity .4s;
}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:transparent;}
.card.hide{display:none;}
.card__vis{
  position:relative;aspect-ratio:16/11;
  background:radial-gradient(120% 100% at 70% 25%,#fdfdfe,#eceef1 62%,#dfe2e6);
  overflow:hidden;
}
.card__vis img{
  width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .8s var(--ease);
}
.card:hover .card__vis img{transform:scale(1.045);}
.card__badge{
  position:absolute;top:16px;left:16px;background:rgba(17,19,21,.88);color:#fff;
  font-size:11px;font-weight:700;letter-spacing:.18em;padding:6px 13px;border-radius:100px;
}
.card__area{
  position:absolute;top:16px;right:16px;background:rgba(255,255,255,.92);
  font-size:12px;font-weight:700;padding:6px 13px;border-radius:100px;color:var(--ink);
  border:1px solid rgba(17,19,21,.07);
}
.card__body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1;}
.card__series{font-size:11px;letter-spacing:.2em;color:var(--gold);font-weight:600;text-transform:uppercase;}
.card h3{font-size:21px;margin:9px 0 12px;}
.card__desc{font-size:13.8px;color:var(--muted);line-height:1.85;flex:1;}
.card__specs{display:flex;flex-wrap:wrap;gap:7px;margin:18px 0 20px;}
.chip{
  font-size:11.5px;padding:5px 12px;border-radius:100px;background:var(--bg-soft-2);
  color:var(--ink-2);letter-spacing:.04em;
}
.card__more{
  display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;
  color:var(--ink);align-self:flex-start;transition:gap .3s var(--ease),color .3s;
}
.card__more:hover{gap:13px;color:var(--gold);}

/* ---------- 比較表 ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg);}
table{width:100%;border-collapse:collapse;min-width:760px;}
th,td{padding:17px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--line-2);white-space:nowrap;font-variant-numeric:tabular-nums;}
thead th{
  background:var(--bg-soft);font-size:11.5px;letter-spacing:.16em;color:var(--muted);
  text-transform:uppercase;font-weight:700;
}
tbody tr{transition:background .3s;}
tbody tr:hover{background:var(--bg-soft);}
tbody tr:last-child td{border-bottom:0;}
td.model{font-weight:700;}
td.model small{display:block;font-weight:500;font-size:11.5px;color:var(--gold);letter-spacing:.12em;}

/* ---------- 影片 ---------- */
.videos{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.vcard{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;background:#000;
  aspect-ratio:16/10;border:1px solid rgba(255,255,255,.08);
}
.vcard video{width:100%;height:100%;object-fit:cover;}
.vcard__label{
  position:absolute;left:20px;bottom:18px;z-index:2;color:#fff;pointer-events:none;
  text-shadow:0 2px 14px rgba(0,0,0,.7);
}
.vcard__label b{display:block;font-size:16px;letter-spacing:.06em;}
.vcard__label span{font-size:12px;opacity:.72;letter-spacing:.1em;}
.vplay{
  position:absolute;inset:0;z-index:3;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,rgba(0,0,0,.15),rgba(0,0,0,.5));
  transition:opacity .4s var(--ease);
}
.vplay.gone{opacity:0;pointer-events:none;}
.vplay i{
  width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.5);backdrop-filter:blur(8px);
  display:grid;place-items:center;transition:transform .35s var(--ease),background .35s;
}
.vcard:hover .vplay i{transform:scale(1.1);background:rgba(255,255,255,.28);}
.vplay svg{width:20px;height:20px;fill:#fff;margin-left:3px;}

/* ---------- 場景 ---------- */
.scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.scene{
  padding:32px 28px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--bg);transition:transform .45s var(--ease),box-shadow .45s var(--ease);
}
.scene:hover{transform:translateY(-6px);box-shadow:var(--shadow-sm);}
.scene__ico{width:34px;height:34px;color:var(--gold);margin-bottom:16px;}
.scene h3{font-size:17px;margin-bottom:9px;}
.scene p{font-size:13.8px;color:var(--muted);line-height:1.85;}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.1);border-radius:var(--radius-lg);overflow:hidden;}
.step{background:var(--dark);padding:38px 30px;transition:background .4s var(--ease);}
.step:hover{background:var(--dark-2);}
.step b{font-size:12px;letter-spacing:.24em;color:var(--gold);display:block;margin-bottom:16px;}
.step h3{font-size:18px;color:#fff;margin-bottom:10px;}
.step p{font-size:13.8px;color:rgba(255,255,255,.58);line-height:1.85;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin-inline:auto;border-top:1px solid var(--line);}
.faq__item{border-bottom:1px solid var(--line);}
.faq__q{
  width:100%;display:flex;align-items:center;gap:18px;padding:24px 4px;text-align:left;
  font-size:16.5px;font-weight:600;transition:color .3s;
}
.faq__q:hover{color:var(--gold);}
.faq__q i{
  margin-left:auto;flex:none;width:22px;height:22px;position:relative;transition:transform .4s var(--ease);
}
.faq__q i::before,.faq__q i::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq__q i::before{left:0;top:10.2px;width:22px;height:1.6px;}
.faq__q i::after{left:10.2px;top:0;width:1.6px;height:22px;transition:opacity .3s,transform .4s var(--ease);}
.faq__item.open .faq__q i{transform:rotate(180deg);}
.faq__item.open .faq__q i::after{opacity:0;}
.faq__a{max-height:0;overflow:hidden;transition:max-height .5s var(--ease);}
.faq__a p{padding:0 4px 26px;color:var(--muted);font-size:14.5px;line-height:1.95;white-space:pre-line;max-width:64ch;}

/* ---------- CTA / 聯絡 ---------- */
.cta{
  background:linear-gradient(135deg,#16181a,#22262a 55%,#16181a);
  border-radius:var(--radius-lg);padding:clamp(40px,6vw,72px);color:#fff;position:relative;overflow:hidden;
}
.cta::before{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-180px;
  background:radial-gradient(circle,rgba(176,141,87,.28),transparent 65%);
}
.cta__in{position:relative;z-index:2;display:grid;grid-template-columns:1fr .9fr;gap:52px;align-items:start;}
.cta h2{font-size:clamp(25px,3.2vw,38px);}
.cta p{margin-top:16px;color:rgba(255,255,255,.62);font-size:15px;}
.cta__links{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.form{display:grid;gap:13px;}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:13px;}
.form input,.form select,.form textarea{
  width:100%;padding:14px 16px;border-radius:12px;font-family:inherit;font-size:14px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#fff;
  transition:border-color .3s,background .3s;
}
.form textarea{resize:vertical;min-height:104px;}
.form input::placeholder,.form textarea::placeholder{color:rgba(255,255,255,.36);}
.form select option{background:#22262a;color:#fff;}
.form input:focus,.form select:focus,.form textarea:focus{
  outline:none;border-color:var(--gold-soft);background:rgba(255,255,255,.1);
}
.form button{
  padding:15px;border-radius:100px;background:#fff;color:var(--ink);font-weight:700;
  font-size:14.5px;letter-spacing:.06em;transition:all .35s var(--ease);
}
.form button:hover{background:var(--gold);color:#fff;}
.form__note{font-size:12px;color:rgba(255,255,255,.42);text-align:center;margin-top:2px;}
.form__ok{
  display:none;padding:16px;border-radius:12px;font-size:13.5px;line-height:1.8;
  white-space:pre-line;word-break:break-word;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.8);
}
.form__ok.show{display:block;}
.form__ok--ok{background:rgba(6,199,85,.14);border-color:rgba(6,199,85,.4);color:#b9f3d0;}
.form__ok--warn{background:rgba(201,169,122,.16);border-color:rgba(201,169,122,.45);color:#f0dfc2;}
.form__ok--err{background:rgba(224,35,27,.16);border-color:rgba(224,35,27,.45);color:#ffc9c6;}

/* ---------- 頁尾 ---------- */
.foot{background:var(--dark);color:rgba(255,255,255,.55);padding:60px 0 34px;}
.foot__top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1);}
.foot__brand .brand__en{color:#fff;}
.foot__brand .brand__zh{color:rgba(255,255,255,.45);}
.foot__brand p{margin-top:18px;font-size:13.5px;max-width:36ch;line-height:1.9;}
.foot h4{color:#fff;font-size:13px;letter-spacing:.16em;margin-bottom:18px;}
.foot li{margin-bottom:11px;font-size:13.5px;}
.foot li a{transition:color .3s;}
.foot li a:hover{color:var(--gold-soft);}
.foot__bot{padding-top:26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;}
.foot__slogan{letter-spacing:.26em;color:var(--gold-soft);}

/* ============================================================
   AI 客服
   ============================================================ */
.ai-fab{
  position:fixed;right:24px;bottom:24px;z-index:960;width:60px;height:60px;border-radius:50%;
  background:var(--ink);color:#fff;display:grid;place-items:center;
  box-shadow:0 14px 36px rgba(17,19,21,.34);transition:transform .4s var(--ease),background .3s;
}
.ai-fab:hover{transform:scale(1.07);background:var(--gold);}
.ai-fab svg{width:25px;height:25px;}
.ai-fab__dot{
  position:absolute;top:2px;right:2px;width:13px;height:13px;border-radius:50%;
  background:#06C755;border:2.5px solid var(--bg);
}
.ai-fab__tip{
  position:absolute;right:74px;top:50%;transform:translateY(-50%) translateX(8px);
  background:var(--ink);color:#fff;font-size:12.5px;padding:9px 15px;border-radius:100px;
  white-space:nowrap;opacity:0;pointer-events:none;transition:all .4s var(--ease);
  box-shadow:var(--shadow-sm);
}
.ai-fab:hover .ai-fab__tip{opacity:1;transform:translateY(-50%) translateX(0);}
body.ai-open .ai-fab{transform:scale(.7);opacity:0;pointer-events:none;}

.ai{
  position:fixed;right:24px;bottom:24px;z-index:980;width:396px;max-width:calc(100vw - 32px);
  height:min(640px,calc(100svh - 48px));background:var(--bg);border-radius:22px;
  box-shadow:var(--shadow-lg);display:flex;flex-direction:column;overflow:hidden;
  border:1px solid var(--line);
  opacity:0;transform:translateY(22px) scale(.97);pointer-events:none;
  transition:opacity .38s var(--ease),transform .38s var(--ease);
}
.ai.open{opacity:1;transform:none;pointer-events:auto;}
.ai__head{
  display:flex;align-items:center;gap:12px;padding:16px 18px;
  background:linear-gradient(135deg,#16181a,#282c31);color:#fff;flex:none;
}
.ai__avatar{
  width:40px;height:40px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--gold),#8f6f42);
}
.ai__avatar svg{width:21px;height:21px;}
.ai__who b{display:block;font-size:14.5px;letter-spacing:.04em;}
.ai__who span{font-size:11.5px;color:rgba(255,255,255,.6);display:flex;align-items:center;gap:6px;}
.ai__who span::before{content:"";width:6px;height:6px;border-radius:50%;background:#06C755;}
.ai__close{margin-left:auto;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:rgba(255,255,255,.75);transition:background .3s,color .3s;}
.ai__close:hover{background:rgba(255,255,255,.12);color:#fff;}
.ai__close svg{width:17px;height:17px;}

.ai__body{flex:1;overflow-y:auto;padding:20px 18px 8px;background:var(--bg-soft);scroll-behavior:smooth;}
.ai__body::-webkit-scrollbar{width:6px}
.ai__body::-webkit-scrollbar-thumb{background:#cfd3d8;border-radius:3px}

.msg{display:flex;gap:9px;margin-bottom:14px;animation:pop .4s var(--ease) both;}
@keyframes pop{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.msg__ava{
  width:29px;height:29px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--gold),#8f6f42);color:#fff;margin-top:2px;
}
.msg__ava svg{width:15px;height:15px;}
.msg__txt{
  background:var(--bg);padding:12px 15px;border-radius:4px 16px 16px 16px;font-size:13.8px;
  line-height:1.85;white-space:pre-line;box-shadow:var(--shadow-sm);max-width:84%;
  border:1px solid var(--line-2);
}
.msg__txt a{color:var(--gold);font-weight:600;text-decoration:underline;text-underline-offset:2px;}
.msg--me{flex-direction:row-reverse;}
.msg--me .msg__txt{background:var(--ink);color:#fff;border-radius:16px 4px 16px 16px;border-color:var(--ink);}
.msg--me .msg__ava{background:var(--bg-soft-2);color:var(--muted);}

.typing{display:flex;gap:4px;padding:15px;}
.typing i{width:6.5px;height:6.5px;border-radius:50%;background:var(--muted-2);animation:tp 1.3s infinite;}
.typing i:nth-child(2){animation-delay:.18s}
.typing i:nth-child(3){animation-delay:.36s}
@keyframes tp{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}

.ai__chips{display:flex;flex-wrap:wrap;gap:7px;padding:0 18px 12px;background:var(--bg-soft);flex:none;}
.ai__chip{
  font-size:12.5px;padding:8px 14px;border-radius:100px;background:var(--bg);
  border:1px solid var(--line);color:var(--ink-2);transition:all .3s var(--ease);
  animation:pop .35s var(--ease) both;
}
.ai__chip:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px);}

.ai__foot{padding:12px 14px 14px;border-top:1px solid var(--line);background:var(--bg);flex:none;}
.ai__inputrow{display:flex;gap:9px;align-items:flex-end;}
.ai__inputrow textarea{
  flex:1;border:1px solid var(--line);border-radius:20px;padding:11px 16px;font-family:inherit;
  font-size:13.8px;line-height:1.6;resize:none;max-height:104px;background:var(--bg-soft);
  transition:border-color .3s,background .3s;
}
.ai__inputrow textarea:focus{outline:none;border-color:var(--gold);background:var(--bg);}
.ai__send{
  width:41px;height:41px;flex:none;border-radius:50%;background:var(--ink);color:#fff;
  display:grid;place-items:center;transition:background .3s,transform .3s var(--ease);
}
.ai__send:hover{background:var(--gold);transform:scale(1.06);}
.ai__send:disabled{opacity:.35;pointer-events:none;}
.ai__send svg{width:17px;height:17px;}
.ai__hint{font-size:10.5px;color:var(--muted-2);text-align:center;margin-top:9px;letter-spacing:.04em;}

/* ---------- 響應式 ---------- */
@media (max-width:1024px){
  .hero__in{grid-template-columns:1fr;gap:40px;}
  .hero__art{max-width:560px;}
  .grid{grid-template-columns:repeat(2,1fr);}
  .values{grid-template-columns:repeat(2,1fr);}
  .scenes{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .cta__in{grid-template-columns:1fr;gap:36px;}
  .foot__top{grid-template-columns:1fr 1fr;}
}
@media (max-width:760px){
  .wrap{width:calc(100% - 32px);}
  .nav__links{
    position:fixed;inset:72px 0 auto 0;flex-direction:column;gap:0;background:rgba(255,255,255,.97);
    backdrop-filter:blur(20px);padding:8px 24px 24px;border-bottom:1px solid var(--line);
    transform:translateY(-14px);opacity:0;pointer-events:none;transition:all .35s var(--ease);
  }
  body.menu-open .nav__links{transform:none;opacity:1;pointer-events:auto;}
  .nav__links a{padding:15px 0;border-bottom:1px solid var(--line-2);width:100%;font-size:15px;}
  .nav__cta{display:none;}
  .burger{display:block;}
  .hero{min-height:auto;padding:104px 0 64px;}
  .hero__stats{gap:26px;}
  .hero__scroll{display:none;}
  .grid,.values,.scenes,.steps,.videos{grid-template-columns:1fr;}
  .foot__top{grid-template-columns:1fr;gap:32px;}
  .form__row{grid-template-columns:1fr;}
  .ai{right:0;bottom:0;width:100%;max-width:100%;height:100svh;border-radius:0;border:0;}
  .ai-fab{right:16px;bottom:16px;width:55px;height:55px;}
  .ai-fab__tip{display:none;}
}