/* ==========================================================================
   TORILAB — Base Design System (dùng chung cho toàn bộ website)
   Nguồn: trang chủ option 3 đã chốt (html/option3/index.html)
   Phiên bản: 1.1 · 2026-10-16 — đồng bộ 100% với trang chủ WordPress
   --------------------------------------------------------------------------
   0. Font
   1. Tokens (màu · font · cỡ chữ · line-height · spacing · radius · motion)
   2. Reset & base
   3. Typography (h1–h6 + class tiện ích)
   4. Layout (wrap · section · grid · stack)
   5. Eyebrow · Label · Tag
   6. Buttons
   7. Links
   8. Cards
   9. Forms
   10. Utilities
   Breakpoints: mobile ≤720 · tablet 721–1100 · laptop 1101–1439 · PC ≥1440
   ========================================================================== */

/* 0. Font — Geist + Geist Mono (Google Fonts). Khi lên WordPress: enqueue trong functions.php */
/* @import url("https://fonts.googleapis.com/css2?family=Geist:wght@300..700&family=Geist+Mono:wght@400;500&display=swap"); */

/* ==========================================================================
   1. TOKENS
   ========================================================================== */
:root{
  /* --- Màu nền & bề mặt (theme tối) --- */
  --c-bg:#070807;            /* nền trang */
  --c-surface-1:#131513;     /* header, footer */
  --c-surface-2:#1B1B1A;     /* card, box nội dung */
  --c-surface-3:#2A2A28;     /* button xám (Partner With Us) */
  --c-surface-3-hover:#3A3A37;

  /* --- Màu thương hiệu --- */
  --c-lime:#CCFF66;          /* màu nhấn chính */
  --c-lime-soft:rgba(204,255,102,.1);
  --c-lime-line:rgba(204,255,102,.45);
  --c-ink:#0D140E;           /* chữ tối trên nền lime */
  --c-ink-2:rgba(13,20,14,.78);

  /* --- Chữ trên nền tối --- */
  --c-text-1:#FFFFFF;                    /* tiêu đề */
  --c-text-2:rgba(255,255,255,.72);      /* đoạn văn */
  --c-text-3:rgba(255,255,255,.5);      /* phụ, nhãn mono */
  --c-link:rgba(255,255,255,.75);        /* link mặc định */

  /* --- Đường kẻ --- */
  --c-line:rgba(255,255,255,.12);
  --c-line-strong:rgba(255,255,255,.3);

  /* --- Font --- */
  --ff-sans:"Geist",system-ui,-apple-system,"Hiragino Sans","Noto Sans JP",sans-serif;
  --ff-mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --fw-light:300; --fw-regular:400; --fw-medium:500; --fw-semibold:600;

  /* --- Cỡ chữ (fluid: mobile → PC) --- */
  --fs-h1:clamp(38px,4.7vw,76px);    /* Hero — 1 lần/trang */
  --fs-h2:clamp(40px,4.9vw,70px);    /* Tiêu đề section */
  --fs-h3:clamp(26px,2.6vw,40px);    /* Tiêu đề khối con (Group Products, Newsroom, 2 cột Careers) */
  --fs-h4:clamp(22px,1.8vw,28px);    /* Tiêu đề box nội dung (Twomi × Buzzencer, Partner Services) */
  --fs-h5:20px;                      /* Tiêu đề card (thẻ sản phẩm, tin tức) */
  --fs-h6:17px;                      /* Tiêu đề nhỏ, mục danh sách */
  --fs-lead:clamp(17px,1.3vw,20px);  /* Đoạn giới thiệu section */
  --fs-body:16px;                    /* Đoạn văn chuẩn */
  --fs-small:15px;                   /* Mô tả trong card */
  --fs-caption:13px;                 /* Chú thích */
  --fs-eyebrow:12px;               /* Eyebrow (mobile: 14px) */
  --fs-label:12px;                   /* Nhãn mono */
  --fs-label-lg:18px;                /* Nhãn mono lớn trong box */
  --fs-btn:15px;

  /* --- Line-height --- */
  --lh-tight:1;       /* h1, h2 */
  --lh-heading:1.1;   /* h3 */
  --lh-snug:1.2;      /* h4, h5 */
  --lh-body:1.6;      /* đoạn văn */
  --lh-lead:1.55;     /* lead, mô tả card */

  /* --- Letter-spacing --- */
  --ls-h1:-.04em; --ls-h2:-.04em; --ls-h3:-.03em; --ls-h4:-.025em; --ls-h5:-.01em;
  --ls-mono:.04em;

  /* --- Spacing (hệ 4px) --- */
  --sp-1:4px;  --sp-2:8px;  --sp-3:12px; --sp-4:16px; --sp-5:20px;
  --sp-6:24px; --sp-7:28px; --sp-8:32px; --sp-10:40px; --sp-12:48px;
  --sp-16:64px; --sp-20:80px;
  --gap-grid:16px;                              /* khoảng cách giữa các card */
  --pad-card:clamp(24px,2.8vw,48px);            /* padding trong box/card lớn */
  --pad-section:clamp(88px,10vw,160px);         /* khoảng cách giữa các section */
  --gap-head:clamp(40px,5vw,72px);              /* tiêu đề section → nội dung */

  /* --- Layout --- */
  --max:1520px;
  --pad:clamp(16px,2.6vw,40px);                 /* lề trái/phải trang */
  --measure:64ch;                               /* độ rộng tối đa đoạn văn */

  /* --- Bo góc --- */
  --r:32px;          /* card, section box */
  --r-md:22px;       /* card nhỏ */
  --r-sm:12px;       /* dropdown, input */
  --r-pill:99px;     /* button, tag */
  --r-arch:999px 999px var(--r) var(--r);  /* hình vòm (motif logo) */

  /* --- Button --- */
  --btn-h:50px; --btn-h-sm:40px;
  --btn-dot:36px; --btn-dot-sm:30px;

  /* --- Motion --- */
  --ease:cubic-bezier(.2,.7,.2,1);
  --t-fast:.25s; --t-base:.35s; --t-slow:.6s; --t-reveal:1s;

  /* --- Lớp --- */
  --z-header:50; --z-menu:45; --z-modal:100;
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--c-bg);color:var(--c-text-1);
  font-family:var(--ff-sans);-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,video{max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--c-lime);outline-offset:3px}
::selection{background:var(--c-lime);color:var(--c-ink)}

/* ==========================================================================
   3. TYPOGRAPHY
   Dùng thẻ h1–h6 cho ngữ nghĩa SEO; nếu cần cỡ khác thẻ → dùng class .t-h1…t-h6
   ========================================================================== */
/* Mặc định thẻ = đúng như trang chủ đã chốt (không đổi cỡ/line-height của thẻ ở mức toàn cục) */
h1,h2,h3{font-weight:var(--fw-semibold);letter-spacing:var(--ls-h2);line-height:var(--lh-tight)}
h2{font-size:var(--fs-h2)}

/* Thang tiêu đề — dùng class .t-h1…t-h6, hoặc tự áp dụng cho thẻ bên trong .prose (trang con, bài viết) */
.t-h1,.prose h1{font-size:var(--fs-h1);font-weight:var(--fw-semibold);line-height:var(--lh-tight);letter-spacing:var(--ls-h1)}
.t-h2,.prose h2{font-size:var(--fs-h2);font-weight:var(--fw-semibold);line-height:var(--lh-tight);letter-spacing:var(--ls-h2)}
.t-h3,.prose h3{font-size:var(--fs-h3);font-weight:var(--fw-semibold);line-height:var(--lh-heading);letter-spacing:var(--ls-h3)}
.t-h4,.prose h4{font-size:var(--fs-h4);font-weight:var(--fw-semibold);line-height:var(--lh-snug);letter-spacing:var(--ls-h4)}
.t-h5,.prose h5{font-size:var(--fs-h5);font-weight:var(--fw-semibold);line-height:1.25;letter-spacing:var(--ls-h5)}
.t-h6,.prose h6{font-size:var(--fs-h6);font-weight:var(--fw-semibold);line-height:1.35}
.t-accent{color:var(--c-lime)}                 /* chữ nhấn lime trong tiêu đề */

.lead{font-size:var(--fs-lead);line-height:var(--lh-lead);color:var(--c-text-2);max-width:var(--measure)}
.t-body,.prose p,.prose li{font-size:var(--fs-body);line-height:var(--lh-body);color:var(--c-text-2)}
.t-small{font-size:var(--fs-small);line-height:var(--lh-lead);color:var(--c-text-2)}
.t-caption{font-size:var(--fs-caption);line-height:1.5;color:var(--c-text-3)}
.prose>*+*{margin-top:1em}
.prose h2,.prose h3,.prose h4{margin-top:1.6em}
.prose a{color:var(--c-lime);text-decoration:underline;text-underline-offset:3px}
.prose ul{list-style:disc;padding-left:1.2em}.prose ol{list-style:decimal;padding-left:1.2em}

@media (max-width:720px){
  .lead{font-size:18px}
  .t-h1-mb{font-size:44px;line-height:1.2}     /* hero h1 mobile 420–720px */
}

/* ==========================================================================
   4. LAYOUT
   ========================================================================== */
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.sec{padding-top:var(--pad-section)}
.sec-last{padding-bottom:var(--pad-section)}

/* Tiêu đề section 2 cột: tiêu đề trái · lead phải (căn đáy) */
.sec-head{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(24px,4vw,80px);align-items:end;margin-bottom:var(--gap-head)}
.sec-head h2{margin-top:var(--sp-6)}
@media (min-width:1101px){.sec-head>.lead{margin-bottom:30px}}
@media (max-width:1100px){.sec-head{grid-template-columns:1fr}}

.grid{display:grid;gap:var(--gap-grid)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:1100px){.grid-3,.grid-4{grid-template-columns:1fr 1fr}}
@media (max-width:720px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

.stack>*+*{margin-top:var(--stack,var(--sp-4))}
.btn-row{display:flex;flex-wrap:wrap;align-items:center;column-gap:var(--sp-7);row-gap:14px}  /* hàng button + link */

/* ==========================================================================
   5. EYEBROW · LABEL · TAG
   ========================================================================== */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;min-height:34px;padding:6px 14px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.1);color:var(--c-text-1);
  font-family:var(--ff-mono);font-size:var(--fs-eyebrow);line-height:1.3;
  letter-spacing:var(--ls-mono);text-transform:uppercase;
}
@media (max-width:720px){.eyebrow{font-size:14px}}

.label{font-family:var(--ff-mono);font-size:var(--fs-label);letter-spacing:var(--ls-mono);text-transform:uppercase;color:var(--c-text-3)}
.label-lg{font-family:var(--ff-mono);font-size:var(--fs-label-lg);font-weight:var(--fw-medium);letter-spacing:var(--ls-mono);text-transform:uppercase;color:var(--c-text-1)}

/* Tag viền lime (Careers, Responsible AI) */
.tag{display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:var(--r-pill);
  border:1px solid rgba(204,255,102,.4);color:var(--c-lime);font-family:var(--ff-mono);font-size:var(--fs-eyebrow);
  letter-spacing:.02em;text-transform:uppercase}
@media (max-width:720px){.tag{font-size:14px;height:auto;min-height:34px;padding:6px 12px;line-height:1.3}}

/* Chip trạng thái trên ảnh (thẻ sản phẩm) */
.chip{display:inline-flex;align-items:center;gap:7px;padding:5px 10px;border-radius:var(--r-pill);
  background:rgba(0,0,0,.5);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  color:#fff;font-family:var(--ff-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-lime)}

/* ==========================================================================
   6. BUTTONS — giống hệt trang chủ
   <a class="btn btn-lime">Text <span class="c">→</span></a>
   ========================================================================== */
.btn{
  display:inline-flex;align-items:center;gap:14px;
  height:var(--btn-h);padding:0 26px;border-radius:var(--r-pill);
  font-size:var(--fs-btn);font-weight:var(--fw-medium);
  transition:background-color var(--t-base) var(--ease),color var(--t-base) var(--ease);
}
.btn:has(.c){padding:0 7px 0 26px}
.btn .c{width:var(--btn-dot);height:var(--btn-dot);border-radius:50%;display:grid;place-items:center;flex:none;transition:transform var(--t-base) var(--ease)}
.btn:hover .c{transform:rotate(-45deg)}

.btn-lime{background:var(--c-lime);color:var(--c-ink)}                       /* CTA chính */
.btn-lime .c{background:var(--c-ink);color:var(--c-lime)}
.btn-ghost{border:1px solid rgba(255,255,255,.22);color:#fff}                  /* CTA phụ */
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-ghost .c{background:var(--c-lime);color:var(--c-ink)}
.btn-grey{background:var(--c-surface-3);color:#fff}                           /* header, menu */
.btn-grey:hover{background:var(--c-surface-3-hover)}
.btn-grey .c{background:var(--c-lime);color:var(--c-ink)}
.btn-dark{background:var(--c-ink);color:#fff}                                 /* trên nền lime */
.btn-dark:hover{background:#000}
.btn-dark .c{background:var(--c-lime);color:var(--c-ink)}

.btn-sm{height:var(--btn-h-sm);padding:0 20px}
.btn-sm:has(.c){padding:0 5px 0 18px;gap:10px}
.btn-sm .c{width:var(--btn-dot-sm);height:var(--btn-dot-sm);font-size:14px}
.btn-block{display:flex;width:100%;justify-content:space-between}

/* ==========================================================================
   7. LINKS
   <a class="alink">Text <i>→</i></a>
   ========================================================================== */
.alink{
  display:inline-flex;align-items:center;gap:6px;padding-bottom:3px;
  font-size:var(--fs-body);font-weight:var(--fw-regular);color:var(--c-link);
  border-bottom:1px solid var(--c-line-strong);
  transition:color var(--t-fast),border-color var(--t-fast);
}
.alink:hover{color:var(--c-lime);border-color:var(--c-lime)}
.alink i{font-style:normal;display:inline-block;transition:transform var(--t-fast) var(--ease)}
.alink:hover i{transform:rotate(-45deg)}
.alink-white{color:#fff}
.alink-lime{color:var(--c-lime);border-color:var(--c-lime-line)}            /* link trong card */
.alink-lime:hover{color:#fff;border-color:#fff}
.alink-sm{font-size:var(--fs-small)}

/* ==========================================================================
   8. CARDS
   ========================================================================== */
.card{background:var(--c-surface-2);border-radius:var(--r);padding:var(--pad-card);overflow:hidden}
.card-lime{background:var(--c-lime);color:var(--c-ink)}
.card-lime h1,.card-lime h2,.card-lime h3,.card-lime h4,.card-lime h5{color:var(--c-ink)}
.card-lime p{color:var(--c-ink-2)}
.card-arch{border-radius:var(--r-arch)}
.card-sm{border-radius:var(--r-md)}

/* Bảng thông tin dạng dl (Company Information) */
.info dl{border-top:1px solid var(--c-line-strong)}
.info dl>div{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-4);padding:var(--sp-4) 0;border-bottom:1px solid var(--c-line-strong)}
.info dt{color:var(--c-text-2)}.info dd{color:#fff}

/* ==========================================================================
   9. FORMS (cho trang Contact / Partnerships sau này)
   ========================================================================== */
.field{display:flex;flex-direction:column;gap:var(--sp-2)}
.field label{font-family:var(--ff-mono);font-size:var(--fs-label);letter-spacing:var(--ls-mono);text-transform:uppercase;color:var(--c-text-3)}
.input,.textarea,.select{
  width:100%;min-height:50px;padding:12px 18px;border-radius:var(--r-sm);
  background:var(--c-surface-2);border:1px solid var(--c-line);color:#fff;font:inherit;
  transition:border-color var(--t-fast);
}
.textarea{min-height:160px;resize:vertical}
.input::placeholder,.textarea::placeholder{color:var(--c-text-3)}
.input:focus,.textarea:focus,.select:focus{outline:none;border-color:var(--c-lime)}

/* ==========================================================================
   10. UTILITIES
   ========================================================================== */
.c-lime{color:var(--c-lime)} .c-white{color:#fff} .c-muted{color:var(--c-text-2)} .c-faint{color:var(--c-text-3)}
.bg-surface{background:var(--c-surface-2)} .bg-lime{background:var(--c-lime);color:var(--c-ink)}
.nowrap{white-space:nowrap}
.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}
.hide-mb{} .show-mb{display:none}
@media (max-width:720px){.hide-mb{display:none!important}.show-mb{display:revert}}

/* Hiệu ứng xuất hiện khi cuộn (JS thêm class .in) */
.rv{opacity:0;transform:translateY(28px) scale(.99);transition:opacity var(--t-reveal) var(--ease),transform var(--t-reveal) var(--ease)}
.rv.in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.rv{opacity:1;transform:none}}

/* Ẩn banner "development site" của WPML (chỉ hiện trên localhost/dev) */
.otgs-development-site-front-end{display:none!important}
/* Bỏ qua tới nội dung chính (a11y) — chỉ hiện khi dùng phím Tab */
.skip-link{position:fixed;left:12px;top:-80px;z-index:10000;background:#CCFF66;color:#0A0A0A;padding:10px 16px;border-radius:8px;font-weight:600;font-size:14px;text-decoration:none;transition:top .15s}
.skip-link:focus{top:12px}
/* Banner cookie */
.ck-bar{position:fixed;left:16px;right:16px;bottom:16px;z-index:9000;max-width:760px;margin:0 auto;display:flex;align-items:center;gap:16px 24px;flex-wrap:wrap;padding:18px 22px;border-radius:18px;background:#141614;border:1px solid rgba(255,255,255,.14);box-shadow:0 12px 40px rgba(0,0,0,.45);color:rgba(255,255,255,.82);font-size:14px;line-height:1.6;opacity:0;transform:translateY(12px);transition:opacity .3s,transform .3s}
.ck-bar.on{opacity:1;transform:none}
.ck-bar p{flex:1 1 320px;margin:0}
.ck-bar a{color:#CCFF66;text-decoration:underline;text-underline-offset:3px}
.ck-btns{display:flex;gap:10px;flex:none}
.ck-b{min-height:44px;padding:0 20px;border-radius:99px;font:inherit;font-weight:500;cursor:pointer;border:1px solid rgba(255,255,255,.35);background:transparent;color:#fff;transition:background .2s,color .2s,border-color .2s}
.ck-b:hover{border-color:#fff}
.ck-ok{background:#CCFF66;border-color:#CCFF66;color:#0A0A0A}.ck-ok:hover{background:#fff;border-color:#fff}
.ck-b:focus-visible,.f-ck:focus-visible{outline:2px solid #CCFF66;outline-offset:2px}
.f-ck{background:none;border:0;padding:0;font:inherit;color:inherit;cursor:pointer;text-align:left}
@media (max-width:560px){.ck-btns{width:100%}.ck-b{flex:1}}
@media (prefers-reduced-motion:reduce){.ck-bar{transition:none}}
/* Ảnh có width/height (để giữ chỗ): kích thước hiển thị vẫn do CSS quyết định (specificity 0) */
:where(img[width][height]){width:auto;height:auto}

/* Eyebrow hero (Research / Technology / Products / Company / Careers): chấm lime + chữ, không nền */
.hero .kick.kick-eb{display:flex;width:fit-content;background:none!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;padding-left:0;padding-right:0;color:#fff}
.hero .kick.kick-eb + .kick{margin-top:12px}
.kick-eb .pr-dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px var(--lime);flex:none}